7 AI LINE Sticker Tools Compared [2026] — Bulk 40 Pack, Auto-Spec, Pricing
"I want to make LINE stickers with AI — but which tool is actually worth using?" — in this article we compare the main tools that can produce AI LINE stickers, focusing on what really matters in practice: bulk-40 generation, LINE spec auto-formatting, character consistency, and pricing.
TL;DR — picks by use case
- You want a full 40-pack ready for LINE submission today: Stampo
- You just want one or two stickers to use in chat: LINE AI Sticker Maker (official, in-app)
- You like building things from templates yourself: Canva
- You can actually draw and want full creative control: Procreate / Adobe Express
The 5 axes we compared
- Bulk-40 generation: LINE allows up to 40 stickers per set. Doing 40 in one shot vs. one at a time is the difference between an afternoon and a week.
- Character consistency: do all 40 stickers actually look like the same character? This is the hardest part of AI sticker workflows.
- LINE spec auto-formatting: does the tool output 370x320 transparent PNGs, even dimensions, 10px margins, the right tab/main images — without you fixing it?
- Free preview: can you check the style before paying? A huge factor for reducing AI roulette frustration.
- Price: effective cost per finished 40-pack.
The 7 tools — at a glance
| Tool | Bulk-40 | Char consistency | LINE spec auto | Free preview | Price (40 pack) |
|---|---|---|---|---|---|
| Stampo | ◎ 40 in one go | ◎ Locked from 1 photo | ◎ Automatic | ◎ Yes | ≈ US$6.50 |
| LINE AI Sticker Maker (official) | △ 1 at a time | ○ Prompt-dependent | ◎ Native | ○ In-app | Free → paid |
| Canva | △ Template work | △ You manage it | × Manual | ◎ Free tier | Free → Pro |
| ChatGPT (DALL-E) | × One per prompt | △ Hard at scale | × None | ○ Inside Plus | From US$20/mo |
| Midjourney | × One per prompt | △ Style Reference helps | × None | × Sub only | From US$10/mo |
| Adobe Express | △ Template work | △ You manage it | × Manual | ○ Free features | Free → paid |
| Procreate | △ Hand-drawn | ◎ Up to you | × All manual | — One-time buy | US$12.99 one-time |
* Pricing and feature notes reflect publicly available info as of May 2026. Check each official site for current details.
Tool-by-tool notes
1. Stampo (our recommendation)
Upload one photo, and AI produces a 40-sticker pack — purpose-built for LINE. No prompting required. Works on photos of family, pets, yourself, or your own illustrations. All 40 stickers stay on-model (same character), and transparency, sizing, and 10px margins are all formatted to LINE spec automatically into a submission-ready ZIP.
Strengths:
- 40 stickers in one batch, all on-model
- Free style preview before you pay — see the result first
- ZIP output ready for LINE Creators Market submission
- Single flat price per pack (40 stickers + 8 spares)
- Runs in your browser — no install. Works end-to-end on mobile
Trade-off: it's photo-first by design. Pure text-prompt workflows aren't its sweet spot.
2. LINE AI Sticker Maker (official)
Built into the LINE app itself. Text-prompt based, produces one or a few stickers at a time to use inside LINE. Official integration is smooth, but it's not really built for producing a 40-pack for sale. Good entry point if you just want a couple of stickers for your own chats.
3. Canva
The well-known online design tool with a huge template library. It has AI image generation, but nothing in Canva is LINE-sticker-aware — sizing, transparency, margins are all on you. Great if you also need logos / flyers / social posts from the same tool, or if you enjoy assembling things from templates.
4. ChatGPT (DALL-E)
Flexible for one-off prompts, but keeping a character consistent across 40 images is brutal. You can attach reference images, but the workflow effort is orders of magnitude higher than a purpose-built tool. That said, ChatGPT is excellent as a companion tool — see our chibi sticker guide for how to use ChatGPT alongside Stampo.
5. Midjourney
Strong on visual quality and style range. Style Reference helps with consistency, but Discord/web workflow plus manual LINE-spec conversion afterwards means it suits creators who are precious about look-and-feel, not people racing to ship a pack.
6. Adobe Express
Adobe's online design tool. Plenty of templates and AI features, but like Canva, it's not LINE-sticker-aware, so size and spec compliance are still manual work. Makes sense if you already live in the Adobe ecosystem.
7. Procreate
iPad-only, professional illustration app. Not AI — purely hand-drawn. Best for skilled illustrators who want full creative control over every sticker. Quality ceiling is high; time investment is too.
3 things to keep in mind for AI LINE stickers
① Character consistency across 40 stickers is the real hurdle
Making one cute sticker with AI is easy. Making 40 stickers that look like the same character is the hard part. General-purpose AI needs prompt engineering and reference setup to pull this off, while a purpose-built tool just gives it to you.
② LINE's spec is fussier than you'd think
370x320 stickers, 240x240 main image, 96x74 tab, even-numbered dimensions, 10px margins, transparent PNG. With a generic tool, fixing each image afterwards adds up to real hours, so automated tools save more time than people expect.
③ Copyright and likeness are your responsibility, every tool
AI generation doesn't make output copyright-free. Stickers based on celebrities, well-known IP, or other people's likeness get rejected by LINE review. Use photos where you own the rights — yourself, family, your pet, or your own illustrations.
So which one should you pick?
If your goal is "get an AI LINE sticker pack done and submitted to LINE today", the purpose-built option — Stampo — is the safest pick right now. The free preview lets you check the style before paying anything, so the safest route is just to try it and see.
If you only want a sticker or two to use in your own LINE chats, the official LINE AI Sticker Maker is hard to beat for that specific case.