Prep → Resolution and DPI

Resolution and DPI: 150, 300 or 600 by process.

150 vs 300 vs 600 DPI? 150 for DTG and 300 for DTFlex at Printful, no DPI at Redbubble or on a cut path: floor, recommendation or printer output.

Sources read 2026-10-19 · updated 2026-10-29 · next re-read due 2027-01-17

On this page

What “resolution” means before any number

Three different things get called resolution, and the sources swap between them without saying so.

The first is the file’s pixels divided by the inches it will be printed at. That is the number platforms mean when they ask for 150 or 300 DPI “at print size”, and it has to be checked after any scaling: DTF Transfers Now says a 300 DPI file scaled up to double its size is really a 150 DPI file. The second is what the printer does: the dpi on a maker’s spec sheet is an output mode, not a file rule (the printer-output section below). The third is halftone frequency in LPI, which only separation workflows and film output use.

Two sources break the pattern. Redbubble says DPI and PPI do not affect the uploaded image and states pixel minimums instead. A vector has no resolution: Roland DGA says “If you’re working with a vector image, resolution is not an issue.” This guide only repeats rows the eight process guides already carry, each with the link it has there. The glossary entries for DPI, LPI and vector vs raster carry the same split.

What the sources state

Each row gives the stated value, what it is stated as (minimum, recommended, ideal, accepted, output or not stated) and whether the source ties it to print size. “Print size” means the source says the figure applies at the final printed size. Where a row does not say, this guide does not add it.

Best DPI for T-shirt printing: raster at print size, DTG

Source guide: DTG.

  • Printful (platform, DTG): 150 DPI. Stated as a minimum, at print size — Printful: DPI and print file size
  • Printful (platform, DTG): “at least 150 DPI for DTG products”. Stated as a recommendation; print size not stated in the row — Printful: 150 vs 300 DPI
  • Printful (platform, all products): “150–300 DPI, depending on the product requirements” — Printful: Preparing your print file
  • Printful (platform, graphics guide): not over 600 or under 150 — Printful: Graphics guide
  • Printful (platform, DTG page): ceiling, “It’s also best not to exceed 300 DPI” — Printful: DTG file guide
  • Printify (platform, all products): 300 DPI. Stated as a recommendation; “a lower resolution file might also be sufficient” — Printify: Print file requirements
  • Printify (platform, blog): calls 300 a minimum, then says “You don’t strictly need it for a small print” — Printify: PNG setup for t-shirts
  • Gelato (platform, DTG): minimum 150 DPI; 300 “for the best possible print quality”; print size not stated in the row — Gelato: DTG design files
  • Fourthwall (platform, apparel): “At least 150 DPI at print size for apparel”, 300 for other printed products; “pixels = print size in inches × DPI”, so a 10 × 12 inch apparel print needs 1500 × 1800 px — Fourthwall: Artwork best practices
  • Epson Garment Creator (maker/RIP): 360 dpi. Stated as a recommendation; 180 dpi appears only as a fix for slow imports — Epson: Garment Creator guide
  • T-Biz / T-RIP (RIP vendor article, 2022): “the correct physical size and 200 to 300 dpi”, given as a target to upsample low-resolution web images to, which the platforms in this guide warn against — T-Biz: Artwork for DTG
  • Brother (maker/RIP): not stated — Brother: Graphics Lab manual

Raster at print size: DTF

Source guide: DTF.

Raster at print size: sublimation

Source guide: Dye sublimation.

  • Printful (platform, All-Over Synthetic): a minimum of 150 DPI, and 300 DPI “if your design includes fine lines, small details, or text” — Printful: 150 vs 300 DPI
  • Printful (platform, mugs): “Our mug templates support up to 300 DPI.” — Printful: 150 vs 300 DPI
  • Printify (platform): 300 DPI recommended for JPEG/PNG; for leggings, blankets or tapestries “the required resolution is 120-150 DPI” — Printify: Print file requirements
  • Fourthwall (platform, mugs): “At least 300 dots per inch (DPI) at print size.” — Fourthwall: Mug design
  • Cloudprinter (platform, mugs): “Set 300 DPI resolution” — Cloudprinter: Mug
  • Sawgrass (maker/RIP): “We also recommend working with a Resolution of 300 Pixels/Inch.” Stated as a recommendation — Sawgrass: Photoshop, Windows
  • Gelato (platform): not stated; the article defines DPI and sets no number — Gelato: About image quality

Raster at print size: wall decor

Source guide: Wall decor.

  • Printful (platform, paper): minimum 75 DPI, 300 strongly recommended; “A DPI of 300 is the ideal poster and canvas print file resolution” — Printful file guide
  • Printful (platform, large format): at least 150 — Printful help
  • Printify (platform): 300 recommended, 120-150 for leggings, blankets, tapestries — Printify help; the blog says 300 for canvas — Printify canvas
  • Printumo (platform): 150 for canvas, 300 for posters; “Use 150 DPI for canvas prints (not 300 DPI)” — Printumo file size
  • Prodigi (platform, stretched canvas): “Optimal DPI: 300” — Prodigi wall art
  • Prodigi (platform, CAN-WRAP, a latex, US-made “low-cost alternative to our popular Giclée canvas”): 150 dpi recommended — Prodigi CAN-WRAP sheet
  • Gelato (platform, PDF route): 150 to 300 dpi at actual size — Gelato PDF rules
  • ArtStation (platform): 300 ppi, so 10 × 8 in is 3000 × 2400 px; 24 × 36 canvas 7200 × 10800 — ArtStation specs
  • 4OVER4 (printer, canvas): “Aim for at least 150 pixels per inch at the final print size” — 4OVER4
  • Luma Prints (lab, 2016 tutorial): 200 pixels/inch — Luma template
  • SAIC Service Bureau (lab, HP Latex 700W): 180 to 300 dpi — SAIC latex
  • HP (maker): not stated on the HP Latex canvas page, a landing page for a PDF guide — HP Latex canvas

Raster at print size: screen printing

Source guide: Screen printing.

Raster at print size: embroidery

Source guide: Embroidery. The upload is a picture that a digitiser turns into stitches (embroidery guide); the figures below apply to that picture.

Raster at print size: UV flatbed and UV-DTF

Source guide: UV flatbed and UV-DTF. The guide’s own count: the three sources that cover UV work ask for 300 dpi at final size (Gelato, Prodigi, Long Island DTF Printing).

  • Gelato (platform; phone cases, UV or sublimation, the page does not split them): 300 dpi at final print size is optimal; avoid files below 150 dpi — Gelato: Optimizing print results for phone cases
  • Prodigi (platform): printing method “Direct UV digital printing”, image requirements “png/pdf, 300dpi recommended” — Prodigi: Clear case product sheet
  • Long Island DTF Printing (platform; DTF and UV DTF guide, not split): “Every transfer line prints from a 300 DPI raster file with a clean alpha channel”; PNG with a transparent background, sized to the actual print dimension — Long Island DTF Printing: File requirements
  • Printful (platform; general print-file guide for all products, process not stated, not UV-specific): 150 to 300 DPI is ideal; 300 DPI for small detailed products such as mugs and phone cases — Printful: Prepare the perfect print file
  • Printify (platform; all products, not UV-specific): JPEG/PNG recommended at 300 DPI, a lower resolution may be sufficient depending on the product; 120 to 150 DPI for large-format products — Printify: What type of print files does Printify require?

HTV and vinyl cutting: no resolution on a cut path

Source guide: HTV and vinyl cutting. The two Roland DGA rows come from an article dated February 16, 2010 about wide-format print/cut graphics, not garment HTV.

  • Roland DGA (maker): “If you’re working with a vector image, resolution is not an issue.” For bit-mapped images, the original file’s resolution sets the limits on final print size and quality — Roland DGA: The Perfect Setup
  • Roland DGA (maker): image resolution in ppi “should be about 1/4 your desired dots-per-inch print resolution”; to print at 720 dpi, build the file at 180 ppi at actual size — Roland DGA: The Perfect Setup
  • Silhouette America (software): “SVG files need to be at the default rate of 72 DPI to retain their size.” The context is size retention when exporting or importing SVG in Silhouette Studio — Silhouette America Support: Importing and Exporting Troubleshooting
  • Siser EasyWeed (maker): not stated — Siser: EasyWeed data sheet

Printer output resolution is not a file rule

The makers’ dpi figures are output modes. The guides label them so and none ties them to a file floor.

  • Epson SureColor F1070 (DTF maker): prints at up to 2400 × 1200 dpi; a troubleshooting line set among T-shirt items gives “optimum image resolution is 360 dpi” — Epson: SureColor F1070 User’s Guide
  • Mimaki TxF150-75 (DTF maker): printing resolution 720 and 1,440 dpi, which is output resolution; no file DPI stated — Mimaki: TxF150-75 brochure
  • Roland BN-20D (DTF maker): “Printing resolution Maximum 1440 dpi”, which is output resolution; no file DPI stated — Roland DG: BN-20D datasheet
  • Kornit (DTG maker, print modes not file, 2019): 363 to 636 DPI on Storm, Thunder and Paradigm, 600 × 1200 on Breeze; “Usually there is no need for more than 454DPI for printing on cotton.” — Kornit: FAQ, 2019
  • Sawgrass (sublimation maker/RIP): printer output, not the file: High Speed 300 dpi, High Quality 600 dpi, Advanced Photo 1200 dpi, UltraFine up to 4800 dpi — Sawgrass: Print Utility settings
  • Epson F570 (sublimation maker): “Prints at resolutions up to 2400 dpi”; printer output, not a file rule — Epson: F570 guide (PDF)
  • Epson SureColor V1070 (UV maker): maximum printer output resolution 1440 x 1440 dpi; a printhead spec, not an input-file requirement — Epson: SureColor V1070 specification sheet
  • Epson SureColor SC-V7000 (UV maker): maximum printer output resolution 720 x 1440 dpi; a printhead spec, not an input-file requirement — Epson: SC-V7000 brochure
  • CalderaRIP / Epson SC-V7000 (UV RIP): print modes of 360 x 720, 720 x 720, 720 x 1080 and 720 x 1440 dpi; these are output modes — Caldera: EPSON SureColor SC-V7000 print module interface

Halftone frequency (LPI) against pixels

Source guide: Screen printing. LPI is a film-output setting, not a file DPI. On a print-on-demand upload the RIP applies it (glossary: LPI).

Pixel sizes instead of DPI

Where a platform publishes pixels, the pixels are the requirement and the DPI tag adds nothing.

  • Redbubble (platform, apparel): minimum pixels per product: Premium T-Shirts 2875 × 3900, Men’s Graphic T-Shirts 3873 × 4814, Other Apparel 2400 × 3200; print method not stated. “DPI and PPI don’t affect your final uploaded image.” — Redbubble: Dimensions & Format
  • Redbubble (platform, mugs): pixel minimum, capacity not stated: “Standard Mug - 2700 × 1120 pixels Tall Mug - 2700 × 1624 pixels” — Redbubble: Dimensions & Format
  • Redbubble (platform, other hard goods): “Mouse Pads 2559 × 2165 pixels”, “Desk Mats 8268 × 4331 pixels”, “Coasters 1860 × 1860 pixels” — Redbubble: Dimensions & Format
  • Redbubble (platform, wall): posters 2870 × 4100 px (Extra small) to 8310 × 11790 (Large); framed and canvas 2400 × 1600 to 4800 × 4800; Art Prints 3840 × 3840 — Redbubble specs
  • Redbubble (platform, caps and large goods): nothing above 300MB or 13500 × 13500 pixels; minimums include “Tapestries 7632 × 6480 pixels” and “Jigsaw Puzzles 9075 × 6201 pixels” — Redbubble: Dimensions & Format
  • Printify (platform, DTG): blog says build “natively at 4500 × 5400 px at 300 DPI (15 × 18 in print canvas)” — Printify: PNG setup for t-shirts
  • Printify (platform, mugs; marketing article, not a per-provider template): “Design your art files at 2475 × 1155 pixels for a standard 11oz canvas.” — Printify: Designing POD mugs
  • Printify (platform, wall): 16 × 20 in print, 15.5 × 19.5 in mat opening, 4800 × 6000 px recommended — Printify sizes
  • Fourthwall (platform, mugs): no pixel size on the page; “size a full wrap-around mug design to the print area the product designer shows for the largest mug you sell, at 300 DPI.” and “The 20 oz mug has the widest wrap-around print area.” — Fourthwall: Mug design
  • Printumo (platform, wall): inches × 150 for canvas; 64 × 36 in is 9600 × 5400 px — Printumo file size
  • Prodigi (platform, wall): per-product pixels only in the dashboard uploader and API — Prodigi wall art, Prodigi API
  • Custom Ink (platform, all decoration methods; screen printing guide): typical print size with raster pixel minimums at 200 and 300 DPI; vector is unaffected. Left chest or pocket 3.5 × 3.5 in, 700 × 700 px at 200 DPI, 1,050 × 1,050 px at 300. Full front medium 8 × 10 in, 1,600 × 2,000 and 2,400 × 3,000 px. Full front large 12 × 14 in, 2,400 × 2,800 and 3,600 × 4,200 px. Full back 12 × 16 in, 2,400 × 3,200 and 3,600 × 4,800 px. Hat front 2.5 × 2.5 in, 500 × 500 and 750 × 750 px. Sleeve 3 × 3 in, 600 × 600 and 900 × 900 px — Custom Ink: image resolution guide
  • Brother (DTG maker/RIP): Graphics Lab reads BMP and GIF up to 4,800 × 5,400 px; larger cannot be read — Brother: Graphics Lab manual
  • Printful (platform, file size limits): up to 200 MB, maximum 20,000 × 20,000 px — Printful: Preparing your print file

Upscaling and the DPI tag

Two platforms say they enlarge small files; Prodigi enlarges only a file below its smallest product size (Prodigi FAQ). Assume the rest print what you send. Source guides: Wall decor, Dye sublimation, DTG.

  • Printify (platform, wall): low-resolution designs are enhanced automatically — Printify help
  • Printify (platform, sublimation): “Low-quality designs with artificially increased resolution won’t be automatically enhanced” — Printify: High-quality design file
  • Printify (platform, DTG): artificially increased resolution “can’t be detected by the enhancement tool” — Printify: High-quality design file
  • Printumo (platform, wall): undersized files are scaled up, “possible quality loss” — Printumo file size
  • Printful (platform, wall): “Don’t enlarge a small, low-resolution image and expect it to print sharply.” No statement that Printful upscales — Printful help
  • Printful (platform, DTG): Save for Web “often reduces your file to 72 DPI”
  • Prodigi (platform, wall): the editor flags low resolution; the print may look soft — Prodigi wall art
  • ArtStation (platform, wall): advice to sellers, not a platform step: upscaling “within reason” can give reasonably good quality — ArtStation specs
  • Redbubble (platform): “DPI and PPI don’t affect your final uploaded image.” The pixel minimums are what count — Redbubble: Dimensions & Format

PDF/X and vector files

What the guides carry: a PDF changes which route a file takes, not which resolution it needs.

Where the sources disagree

300 DPI is a minimum at Transfer Superstars, Print Your Cause, Fourthwall’s mug page and for embroidery at Printful. It is a recommendation at Printify and Sawgrass, “ideal” at Printful for posters and canvas, “optimal” at Gelato and Prodigi, and “the gold standard” at Custom Ink, which accepts 200.

Two verdicts test the “minimum” reading. The DTF claim that 300 DPI at the final print size is the minimum is rated partly true (verdict 113): it is that shop’s requirement, and other DTF shops in the DTF guide accept 150. The claim that a DTG t-shirt file needs a minimum of 300 DPI at a 4500 × 5400 px canvas is rated partly true (verdict 122): the figure is Printify’s recommended master spec, and its own page says 300 is not strictly needed for a small print.

This is our own reading of the rows above, not a source’s claim: a file at 300 DPI at real print size clears every stated floor and minimum in the process sections above (see the rows above). A file at exactly 150 passes the 150 floors and is below every 300 minimum, for example Transfer Superstars and Print Your Cause.

The same platform, a different number by product and by date

Printful asks 150 DPI at print size and recommends 150 for DTG and 300 for DTFlex. For DTF its 2024 blog says 150–300 and its help centre, updated 2026-09-30, says 300. On paper it accepts 75 DPI and strongly recommends 300. For embroidery its t-shirt blog says minimum 150 and its embroidery help article says 300. Gelato’s embroidery guidelines say 150 and its FAQ says 300; the guide notes both articles are dated 2025-10-29 and 2025-10-30 and neither supersedes the other.

A guide that quotes Printful at 150 for DTFlex is quoting the 2024 blog, not the help centre. Read the figure for the product and the date of the page.

Canvas: 300, 200 or 150

Printful and Printify’s blog say 300 for canvas; Printumo says “Use 150 DPI for canvas prints (not 300 DPI)”, 4OVER4 says at least 150, and Luma says 200. A 24 × 36 in canvas is 7200 × 10800 px at 300 and 3600 × 5400 at 150, four times fewer pixels, our arithmetic from the sizes in the rows (ArtStation, Printumo). Paper tops out at 300 (Printful), so with an unknown lab deliver 300.

DPI against pixels

Redbubble ignores the DPI tag and publishes pixels; Fourthwall writes the same relation out: pixels = print size in inches × DPI. The two agree. A seller who reads only the DPI figure has not been told the print size, and a figure with no print size attached cannot be held against a printed result.

300 DPI vs 600 DPI: does higher help?

Floors are common; ceilings are rare. Printful’s DTG page says “best not to exceed 300 DPI” and its graphics guide says not over 600. Kornit (2019) sees no need above 454 on cotton. UltraSeps wants 200 minimum and 300 maximum, while a separation article says 600 dpi keeps tiny type readable. Transfer Kingdom accepts 150 to 900. On paper, no lab listed in the wall guide takes more than 300, so 600 buys nothing there.

Who enlarges the file

Printify and Printumo say they scale up small files; Printful says not to expect a small image to print sharply and does not say it upscales. Printify’s own help also says artificially increased resolution is not detected by its enhancement tool. A seller who relies on the platform to rescue a small file has one platform that says it will and one that says it will not.

Output dpi, file dpi and LPI

A maker’s dpi (720, 1440, 2400) is a printhead mode (see the printer-output rows). Roland DGA’s article puts the file at about a quarter of the print dpi: 180 ppi to print at 720 dpi, from a 2010 wide-format print/cut article. Epson’s DTF page gives 360 dpi as optimum image resolution on a printer that outputs up to 2400 × 1200. Sawgrass is the one maker row that gives a file figure, 300 ppi, and it gives it as a recommendation (Sawgrass). No page read reconciles a quarter-of-output rule with a 300 DPI platform rule.

What fails on the floor

Grainy, blurry print from Save for Web or an upscaled file

Cause in the file: a 72 DPI export (Printful’s Save for Web figure, below), or pixels enlarged to hit a DPI number. Printful: Save for Web “often reduces your file to 72 DPI”. Printify: artificially increased resolution “can’t be detected by the enhancement tool”. Source guides: DTG, Wall decor.

Pixelated canvas from a web copy

A compressed copy from a website or message, enlarged to print size, shows square pixels; the lab says uprezzing did not rescue such files (Canvas on Demand, troubleshooting). Source guide: Wall decor.

Blurred small text on mugs

Cause in the file: thin lines or small type at low effective resolution, scaled up to the template. Printify: small text “can blur in the final print, especially on products like mugs” (Printify); Fourthwall: low DPI blurs “especially if the image is scaled up” (Fourthwall). Source guide: Dye sublimation.

Soft edges print rough and blotchy

Symptom: a rough, blotchy edge. Cause in the file: soft edges built from small dots too small to adhere to the garment (Printful). Source guide: DTF.

What shops ask on the forums

The questions below are the resolution questions the process guides already record, with the asker’s words and threads as the guides give them. Each is answered, where it is answered, by the sections above.

“The customer’s art is low-resolution. How do I get it to print size?”

“I have this issue, where the DPI falls below 200, easily.” — Forum: DPI issue, May 2026. Also asked in Forum: Poor Quality AI Art from Customers, March 2026, Forum: Today, ChatGPT introduced Images 2.0, Print Ready?, April 2026 and Forum: Question about DPI, November 2025. In screen printing, asked as “we are sent these low resolution, overly detailed, full color ai created images with spelling errors and broken lines” — Forum: Customer provided AI art is driving me crazy, February 2026.

What the sources say: pixels at print size count, not the tag (DTF Transfers Now), and platforms say not to upscale to reach a number (Printify). The DTF, DTG and screen guides each record that no source says what to do when the pixels are not there: upscale, redraw as vector or print smaller. This guide adds none.

“Does going above 300 DPI help, and why does my DPI drop on export?”

“Does it matter if my design is above 300 DPI?” — Reddit r/printondemand: Question regarding POD and Canva (April 2026). Also Reddit r/printondemand: DPI issue (May 2026) and Reddit r/SCREENPRINTING: 300 Or 600 DPI? (March 2025), from a buyer of DTG tees.

What the sources say: see the ceilings section above. The DTG guide records that no maker, RIP or platform page read explains why a transparent-PNG export reports a lower DPI, or what a design tool’s export-size multiplier changes.

“Is 200 DPI enough for big prints, or should I go to 600?”

“Also is it ok for the DPI to be around 200 for my bigger prints?” — Reddit r/printondemand: Is it okay to have “bleed” with my art prints?, March 2026. Also: “is it worth it to make sure all of my files are the highest possible quality and do 600 dpi?” — Reddit r/EtsySellers: Question For Sellers Of Digital Files For Prints, November 2025.

What the sources say: the wall-decor figures by lab (Printful 75 on paper, 150 for large format; Printumo 150 for canvas; Luma 200; SAIC 180-300), and pixels ÷ print inches gives the largest size a file supports. The wall guide records one question no page answers: a file that meets 300 DPI and still prints soft at a consumer lab.

“My uploaded picture is rejected as low resolution or comes out ruined in the cutter software. Do I need a vector?”

“is there anyway to bypass the low resolution thing?? does it actually ruin the cut if its low resolution?” — Forum: Please help, this annoying low resolution warning … iron-on printable paper, February 2026.

What the sources say: a vector cut path has no resolution, in a Roland DGA article about wide-format print/cut graphics, not garment HTV (Roland DGA). The HTV guide records that none says what the cutter software’s low-resolution warning measures or how to clear it.

Preflight before you upload

  • Ask which number the shop states and as what: a floor, a recommendation or printer output; do not read a maker’s dpi as a file rule — Epson, Mimaki, Kornit
  • With an unknown printer, build raster at 300 DPI at final print size, 1:1 — Printify, Sawgrass, Custom Ink
  • Compute pixels = print inches × DPI and compare with the platform’s pixel table where it has one — Fourthwall, Redbubble
  • Re-check the DPI after any scaling: a 300 DPI file doubled in size is 150 DPI — DTF Transfers Now
  • Do not export with Save for Web; it often drops the file to 72 DPI — Printful
  • Do not enlarge a small image to hit a DPI number; Printify says its enhancement tool cannot detect artificially increased resolution — Printify, Printful
  • For large textiles, check the product: Printify gives 120-150 DPI for leggings, blankets and tapestries — Printify
  • For canvas, read the lab’s figure (150, 200 or 300) before building to 150 — Printumo, Printful
  • For fine lines or small text on all-over synthetic, use 300 DPI — Printful
  • For small text in a screen-print separation, 600 dpi is the figure one separation article gives — Screen Printing Magazine
  • For HTV and cut files, send vector paths; a vector has no resolution — Roland DGA
  • A halftoned file re-screened at another frequency is a separate problem from DPI; ask the shop for its LPI — CADlink

Sources, checked on 2026-10-19 and 2026-10-21

Every source below is already listed in one of the eight process guides, where its read date stands: DTG, DTF, sublimation and wall decor on 2026-10-19; screen printing, embroidery, UV and HTV on 2026-10-21. The guide’s asOf is the older date.

Forum threads

Could not check

  • Impressions Magazine, DTG artwork (2016), impressionsmagazine.com/?p=16003: the page returned HTTP 403 to fetchers, again on 2026-10-25 to a request with a full Chrome user agent and browser Accept headers, and no Wayback copy exists. Its row (a trade-press lead on DTG dpi and print size, not a spec) is removed from the DTG list; no count in this guide used it.
  • The PDF/X standard’s own text and any PDF/X page: none of the eight guides reads one, so this guide cannot say what PDF/X sets for resolution. See the pull request, “gaps for a sweep”.
  • Maker pages the process guides could not read (Brother, Kornit’s current site, HP’s Latex PDF, Moab, Canson): their cells here say “not stated” or carry the guide’s own caveat.

Verdicts on claims in this guide

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