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Orilami
Ready · load designs to begin pre-flight.

POD Print Validator: before and after

An illustration with sample files; your own files show their own results.

Before3 designs that would print badly

  • Blurry, too few pixels

  • White box around it

  • Outside the safe zone

AfterThe same designs, print-ready

  • Sharp at 300 DPI

  • Transparent PNG, no box

  • Inside the safe zone

Merch by Amazon Design Checker: 4500 × 5400 px Pre-Flight

A Merch by Amazon upload is a transparent PNG on a fixed canvas, 4500 × 5400 pixels at 300 DPI in this preset. A design that is the wrong size, carries an opaque background or sits too close to the edge is a rework you would otherwise find out about after uploading.

Drop your design into the tool above. The validator measures it against the preset, checks transparency and safe margins, flags colours that print badly, and exports a print-ready PNG with 300 DPI written into the file. Platforms revise their specifications from time to time, so confirm the current numbers with Amazon, or use the Custom canvas option to set your own.

POD Print Validator

Popular

Pre-flight your t-shirt design for Merch by Amazon: check DPI and CMYK colours, then export a print-ready PNG.

25/ designOpen tool

This is the POD Print Validator set up for one case. See everything it does →

POD Print Validator

A print pre-flight tool for print-on-demand designers. Drop in up to 50 designs and it checks each one against a platform's real specs (Merch by Amazon, Printify, Printful, posters, mugs, phone cases, KDP covers) for resolution, safe margins, bleed, transparency and CMYK gamut, then exports print-ready files. Every pixel stays on your machine.

What it measures

Resolution is read from your file's real pixel size divided by the product's physical print size, giving the effective DPI along the limiting axis: the number the printer sees. Safe-margin checks trace your artwork's actual content and test whether it clears the safe zone. Transparency scans the alpha channel for a solid background and for the soft-edge “halo” that dirties a cut-out.

Runs in your browser

Decoding, alpha scanning, background removal, DPI compositing and DPI stamping run locally, with the heavy pixel work in a Web Worker so the batch stays responsive. Your artwork is never uploaded, which matters when designs are your inventory. Exports are built and zipped in the browser too.

Frequently asked questions

What size should a Merch by Amazon design be?
The preset checks for a 4500 × 5400 pixel canvas at 300 DPI, saved as a PNG with a transparent background. That matches the standard t-shirt specification as this preset was written, but platforms revise their requirements, so confirm the current figures with Amazon before you upload.
Why does a shirt design need a transparent background?
A garment printer prints only the artwork, so an opaque rectangle behind it would print as a solid block on the fabric. This preset expects transparency, and the check reports whether your file carries it.
Does it convert my design to CMYK?
No, and it says so rather than pretending otherwise. It flags colours, very saturated RGB values in particular, that will shift noticeably when a printer converts them, so you can adjust them first. A true conversion needs the printer's own ICC profile, which only they can supply.
Is my design uploaded anywhere to be checked?
No. The whole check runs in your browser and the file is never uploaded. Previewing and checking need no account; an account is needed only to spend tokens when you download the result.
More questions about Orilami →

POD Print Validator at a glance

Key facts about POD Print Validator: where it runs, what it costs, what it accepts and produces, and its limits.
Where it runsEntirely in your browser. Files are never uploaded.
Cost25 tokens per design (about $0.25 at the base rate); 400 tokens for up to 25 designs
AcceptsPNG, JPEG, WebP, GIF, BMP, TIFF, HEIC/HEIF, SVG, PDF
ProducesA per-design pass/fail report, plus print-ready PNG with the correct DPI written in and PDF exports; batches download as a ZIP.
BatchUp to 50 files per run.
Account neededOnly to spend tokens. Browsing and previewing are free.
What it does not doThe colour check is a heuristic warning about colours that print badly, not a colour-managed CMYK conversion with an ICC profile.

Local processing vs. cloud tools

How Orilami compares with the typical online tool that uploads your file to its servers.

Orilami local processing compared with typical cloud tools on file privacy, edit and delete safety, speed, and pricing model.
CriterionOrilami (runs locally)Typical cloud tools
File privacy0 bytes leave your device. Files are processed in your browser's memory.Files are uploaded to external servers, where they may be logged or retained.
Edit & delete safetyYour original is never modified. The exported print file is a new file built in memory.Your original and the result often stay on their servers after you leave.
Speed & performanceInstant: runs on your device, with no queue and no upload or download wait.Depends on your connection and on server load.
Pricing modelPay per use with tokens. No mandatory monthly subscription.Typically a recurring monthly subscription that adds up.

The cloud column describes upload-based online tools in general. Individual services differ.