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ImgWrench

Twitch Sub Badge Resizer

Specs checked against Twitch Help · 2026-10-24
Sub badge
72 · 36 · 18 px
Formats
PNG
Full specs ↓
Export:

Processed in your browser — nothing is uploaded. Fit, sharpening and the chat preview appear after you add an image.

Size and format specs

OutputSizes (px)FormatsMax file sizeTransparency
Sub badge72×72, 36×36, 18×18PNGPNG 25 KBYes

Specs last verified: 2026-10-24

ImgWrench is a free Twitch sub badge resizer: drop in one image and get the 72, 36 and 18px PNGs Twitch asks for, each checked against the 25KB limit. Drop a whole set at once, one image per tenure milestone, and download everything in a single ZIP.

How to make Twitch sub badges

  1. Drop one image per badge into the tool above, up to 20 at once.
  2. If an image isn't square, choose Cover to fill the frame or Crop to pick the area yourself.
  3. Check the chat preview: the 18px badge sits before a name at its real size, in light and dark themes.
  4. If a file is marked over 25KB, turn on compression.
  5. Download the badges one by one, or everything as a ZIP.

Uploading to Twitch

Open your Creator Dashboard, select the menu icon, then go to Monetization, Subscriptions and Subscriber Badges. Choose the badge to change from the dropdown under Manage Badges, then click the + on each size and upload the matching file: 18, 36 and 72px.

Design tips

  • Design for 18px. Most viewers see the smallest size in chat, so use one bold shape and strong contrast. Fine detail disappears.
  • Make tenure easy to read. Badges for 3, 6 and 12 months read best as one family: same shape, with a colour or detail that changes.
  • Leave room for flair. Tier 2 and Tier 3 flair is drawn on top of your badge, so keep the key part of the design clear of where you place it.
  • Mind the rules. Twitch's guidelines don't allow badges of a single letter unless it represents your channel's brand.

Why ImgWrench

  • All three sizes at once. One image in, 72, 36 and 18px out.
  • See it in chat first. The preview shows the badge before a name at 1x.
  • The 25KB limit, checked. Every file shows its size, with one-click compression.
  • Private by design. Your images never leave your device.

Frequently asked questions

How do I resize an image into Twitch sub badges?

Drop one image per badge into the tool above, up to 20 at once. If an image isn't square, choose Cover or Crop, then check the chat preview, where the 18px badge sits before a name at its real size. Download the 72, 36 and 18px PNGs one by one or as a ZIP, ready to upload.

What size are Twitch sub badges?

Twitch asks for each subscriber badge in three square sizes: 18×18, 36×36 and 72×72 pixels, all in PNG format and uploaded separately. Most viewers see the 18px one in chat, so design for that: one bold shape and strong contrast. ImgWrench exports all three sizes from a single image.

What is the file size limit for Twitch sub badges?

Each badge file can't exceed 25KB. ImgWrench shows the size of every file and marks any that go over, with an option to compress them: turn on compression and download again. The same 25KB limit applies to custom badge flair for Tier 2 and Tier 3 subscribers, which must also have a transparent background.

How many sub badges can I upload on Twitch?

One for each tenure milestone you've unlocked. Monetized streamers start with badge slots up to 1 year and Partners up to 10 years, and you unlock more as your tenure with Twitch grows. Tier 2 and Tier 3 subscribers can also get badge flair, a small overlay drawn on your badge, which only works with a custom sub badge.

Do Twitch sub badges need to be approved?

No. Unlike emotes, badges only appear in your own channel, so Twitch shows them straight away without a manual review. They still have to follow Twitch's badge and emote guidelines, which, for example, don't allow badges of a single letter unless it represents your channel's brand.

Can I make a custom Founders badge?

No. Twitch doesn't let channels upload a custom Founders badge. What you can customise are your subscriber badges, one per tenure milestone, and the badge flair Twitch draws on top for Tier 2 and Tier 3 subscribers. Both use the same 18, 36 and 72px PNG sizes, and ImgWrench makes them from one image.

Are my images uploaded anywhere?

No. Everything happens in your browser. Your images are resized on your own device and never sent to a server, and you can confirm this in your browser's network tab. No image data leaves the page at any point, from dropping a file in to downloading the result.