LINE sticker ZIP checker

Choose the ZIP you are about to upload to LINE Creators Market. Each rule of the creation guidelines is checked one by one, and anything that does not fit names the image it is about. The ZIP is only used while it is checked, never stored, and never sent to an AI service.

Drop a ZIP file here, or click to choose One ZIP, up to 60 MB. The check starts as soon as you choose it

How to use it

1Choose the ZIPThe one ZIP you will submit, up to 60 MB. The check starts as soon as you choose it
2Read the resultsEach rule shows OK, Not OK or Note. A rule that is not met lists the images it is about
3Fix and check againSizes, margins, backgrounds and file names can be fixed with the image converter. Then check the new ZIP

LINE sticker image rules

Number of stickers	8, 16, 24, 32 or 40 (animated: 8, 16 or 24)
Format	PNG for every image
Sticker size	Up to 370×320 px (animated: up to 320×270 px, with one side at least 270 px)
File size	1 MB or less per image
Main image	main.png, 240×240 px
Chat tab image	tab.png, 96×74 px
File names	Stickers numbered from 01.png
ZIP file	60 MB or less
Animated stickers	5 to 20 frames each, 1 to 4 loops, 4 seconds of playback at most
Pointed out as notes	Margin (about 10 px on every side), even sizes, RGB colour, transparent background

Good to know

The numbers follow the LINE Creators Market creation guidelines. Check the guideline page for the latest version.
When you upload a ZIP, only images with the right file names are taken. Without those names, upload the images one at a time.
Margins, even sizes, colour mode and a transparent background are guidance in the guidelines, so they are shown as notes, not as failures.
The __MACOSX folder and .DS_Store files a Mac adds to a ZIP are left out of the check.
Only the image rules are checked. What the stickers show is checked in LINE's review.
The ZIP is only used while it is checked and never stored. You can check up to 60 ZIPs a day.

FAQ

Can it tell me why my set was rejected?

It can only tell whether the images meet the rules. What the drawings and text show is decided in LINE's review, which this tool cannot see.

Can it check animated stickers?

Yes. A ZIP with APNG files is checked against the animated sticker rules (up to 320×270, 5 to 20 frames, 1 to 4 loops, 4 seconds at most).

Something is not OK. How do I fix it?

Put the images through the image converter: it fixes the size, margin, transparent background and file names in one go, and makes the main and tab images too.

Do I need an account?

No. Anyone can use it, for free.

Is my ZIP stored?

No. Once checked, the results only stay in this page.

Guides for this tool

Turn images from ChatGPT or Gemini into LINE stickersSplit a sheet, make the background transparent, fix sizes and file names.Why removing the background leaves white edges or holes, and how to fix itA white fringe, or holes in a white character: the causes compared on real pictures.LINE sticker size and format guide370×320, main 240×240, tab 96×74, PNG, 1 MB, ZIP, margin and count at a glance.Make animated LINE stickers with AIAPNG, 320×270, sets of 8/16/24, 4 seconds at most. Poses drawn by AI, turned into motion.

More free tools

LINE sticker image converterTransparent background, 370×320, margins and file names in one go. The ZIP is ready to submit.Sticker sheet splitterSplit a whole sheet of stickers drawn by ChatGPT or Gemini into single transparent stickers.Title and description length checkerCheck titles, descriptions and copyright with LINE's rule: full-width characters count 2, half-width 1.

Want AI to draw the whole set from your character?

With MochiStamp you write one line about your character, and get a set of 8 to 40 stickers drawn and packed into this same ZIP. Sign in with Google for 20 free.

Make stickers