Image Helper Toolv1.20

Slice, clean up and prepare images, right in your browser

Drop an image here Click or tap to choose a file · Ctrl+V to paste

Image

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Grid

Rows Columns

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Cut mode

Cut lines

Drag a line on the image to move it · ←→↑↓ 1px (Shift = 10px) · Del = delete

Show cell numbers

Margin

Space around each image px

Mode

LINE sticker guide: about 10 px

Export

Remove background

Output size

Format

File name

slice_01.png

1Sticker set

Set name

Character (look, colors, traits that must stay the same)

Character type

Main framing

Every cell uses the main framing. Poses that need the whole body switch to Full automatically, poses that use hands get at least Half. Tap the small label in each grid cell to change it yourself.

2Count & sheet layout

Number of stickers

LINE sticker sets come in 8, 16, 24, 32 or 40 images.

Sheet grid (cells per AI image)

Leftover cells on the last sheet

3Poses

Random picks are balanced: must-haves first, then Daily talk 40% · Emotions 25% · Meme 20% · Lifestyle 15%. Locked cells stay.

Tap a cell, then tap a tag to place it · with no cell selected a tag fills the next empty cell · drag to move or swap (mouse) · ✎ edit text/pose · lock keeps a cell when re-rolling · ★ must-have · ⚠ complex pose

4Text on the images

No text on the images (add it later so letters are not distorted)

Sticker text language

Text size

Text position

Font

Text outline

Text color

5Image style

Pick one or more to mix styles. 3D and Realistic styles get bright front lighting automatically.

Extra cute (big sparkly eyes, plump cheeks, blush, lively poses) Emotion effects (sweat drops, anger marks, sparkles, hearts, tears) Small props that help show the meaning

6Background for cut-out

Sticker with a die-cut border (thick white outline around the character and text) Sticker without shadow (recommended, easiest to cut out) Sticker with shadow

Add a background instruction

Bright green works best if the character has no green · white suits art with clear outlines · blue is the backup for green characters · magenta is common for sprites

✓Before submitting to LINE

From the LINE Creators Market review guidelines.

?How to use the prompt

Download the .md and drag the file into your AI chat, or copy the whole file / one sheet and paste it.
Then type this at the end:
สร้างภาพสติ๊กเกอร์ ตามข้อมูลที่ส่งให้ทีละใบ

If you attach a reference image while generating, use this instead:Reference image

สร้างจากภาพ สร้างภาพสติ๊กเกอร์ ตามข้อมูลที่ส่งให้ทีละใบ
When a sheet image is ready, press “Slice this sheet” and load the image in the Slice tab.

Slice images, remove backgrounds and make LINE stickers with AI for free

Image Helper Tool is a free online toolkit for sticker makers and designers. No sign-up needed. Slicing and background removal run in your browser, so your images are not uploaded to a server.

Grid image slicer

Split an image into equal cells or drag every cut line yourself. Auto mode cuts along each sticker's real edge. Set margins, LINE sizes and a name for each image, then download everything as a ZIP.

Background remover to transparent PNG

Remove a flat background in one click. Pick the color with an eyedropper, adjust tolerance and edge smoothing, remove shadows and color fringe, and preview the result live.

LINE sticker prompt maker

Choose from over 250 poses, text, fonts, text colors and art styles. The tool writes a prompt for an AI to draw your sticker sheets one by one, with sticker text in 5 languages.

LINE file set export

Pack the sliced stickers as 01.png, 02.png … plus main.png and tab.png in a single ZIP.

How to make LINE stickers with AI

Create a prompt in the Sticker Preset Creator tab and give it to an AI image generator, one sheet at a time.
Press “Slice this sheet” and load the image. The grid, background removal, size and file names are set for you.
After slicing every sheet, press “Export LINE set (.zip)” and upload the files to LINE Creators Market.

FAQ

Is it free?

Yes. Every feature is free and no sign-up is needed.

Are my images uploaded anywhere?

No. Slicing and background removal happen in your browser. Prompt generation only sends the options you picked, never images.

Does it work on mobile?

Yes. It works on computers, tablets and phones.

Which AI can I use the prompt with?

The prompt is plain text, so it works with AI image generators that accept text instructions, such as Gemini or ChatGPT.

What kind of background removes best?

A single flat background color. If your stickers have a white border, use a vivid background such as green, blue or magenta.