Code to Image — turn code snippets into beautiful shareable images (a free carbon / ray.so alternative)
A code-to-image generator renders the snippet you paste into a beautiful, syntax-highlighted picture: choose a language (JS, TS, Python, Go, Rust, JSON, Bash, HTML, CSS, SQL — or let it auto-detect) and a tasteful color theme, wrap it in a mac traffic-light window, set it on a coordinated gradient or mesh background, and add padding, rounded corners and a soft shadow. A snippet that turns to mush as plain text in a tweet becomes a polished code image you can post on X, drop in a blog, a doc or a slide. Design Cat lets you pick a social ratio, toggle line numbers and add a filename title, then export a crisp 2x PNG or copy straight to the clipboard — all rendered locally in your browser, nothing uploaded.
Code to Image is a free online tool from Design Cat that runs entirely in your browser — open it, do it, and download the result. Nothing is uploaded, there's no sign-up and no limits.
Why turn code into an image instead of pasting the text?
On X, in slides and across most social platforms, a code block loses its monospaced font and syntax colors and gets re-wrapped into a tangle — readers can't follow the indentation or structure. Rendering the code as an image fixes all of that at once: a monospaced font keeps things aligned, syntax highlighting separates keywords, strings and comments at a glance, and the fixed layout can't be re-wrapped by the platform. That's exactly why carbon.now.sh and ray.so caught on — sharing snippets is a daily act for developers, and making them look clear is a common little pain. Design Cat does it as a pure in-browser tool: open and go, nothing uploaded — which matters, because the code you reach for to share often contains an API key, a token, an internal endpoint or unreleased work you shouldn't post to an unknown server first.
A code image you can actually post comes from a few details stacked together: a mac red-yellow-green traffic-light window frame gives it the 'this is an editor' context; a coordinated gradient or soft mesh background lifts the code block off a dead-white field; a ring of padding lets it breathe, the corners round off, and a gentle drop shadow makes it float. Design Cat draws every window frame and highlight in code with no image assets, so however long the snippet or however far you scale the export, the frame and text stay vector-crisp and never blur. For themes we curate three that hold up: the dark Midnight and Dracula for social and dark-mode blogs, the light Daylight for print and light docs — few and refined, so a quick pick never goes wrong. The background presets match the Screenshot Beautifier exactly, so the two tools feel like one set.
A few moves make the result look professional: get the language right (or trust Auto) so the highlighting is accurate — the tool covers JS, TS, Python, Go, Rust, JSON, Bash, HTML, CSS and SQL plus plain text; add a filename to the window bar (like fib.js or main.rs) so readers know which file it is; and pick the ratio for the platform — 16:9 shows fullest in an X feed, 1.91:1 is the OG ratio for article share cards, 1:1 for square spots. Exports render at 2x pixel density by default, staying sharp on high-DPI screens and when zoomed; and if downloading-then-reuploading is a hassle, just Copy to clipboard and paste it straight in. All local, nothing uploaded, no sign-up, no limits.
Code-to-image compared: Design Cat vs carbon vs ray.so
All three do the same job — render code into an image with syntax highlighting, a window frame, a background and a shadow. The table below lists only verifiable facts (as of June 2026, per each tool's own site); it doesn't inflate or knock anyone. A one-line 'which should I use' follows.
| Tool | Free | No login | Renders locally (code not uploaded) | Export |
|---|---|---|---|---|
| Design Cat Code to Image | Yes | Yes | Yes (canvas, in-browser) | PNG (2x) / copy to clipboard |
| carbon.now.sh | Yes | Not needed for basic use (login only saves snippets) | Not stated | PNG / SVG |
| ray.so | Yes | Yes | Not stated | PNG / SVG / copy |
'Not stated' means that tool's site doesn't explicitly claim it, so we don't assert it for them — this table lists only what we can verify.
Which should you use?
- You want the most themes and font tweaking: use carbon — the widest theme/font options, plus SVG export.
- You like a polished UI and the Raycast ecosystem: use ray.so.
- Your code holds keys / internal logic, you want bilingual, and you need it provably local: use Design Cat — pure in-browser canvas, background presets matching the Screenshot Beautifier, 2x export and copy straight to clipboard.
How to use code to image
- 1Paste your code into the editor on the left (any language works).
- 2Pick a language (or use Auto to detect it), then choose a theme: Midnight, Dracula or Daylight.
- 3Choose a gradient or mesh background; drag the sliders for padding and corner radius, and toggle the shadow with its strength.
- 4Optionally toggle line numbers, add a filename title to the window bar, and pick an export ratio (auto / 16:9 / Twitter / OG…).
- 5Hit Download 2x PNG to save, or Copy to clipboard to paste straight into a tweet, Slack or a doc.
Why use Design Cat's Code to Image?
- An asset an AI can't hand you: ChatGPT can write the code, but it can't give you a finished, postable code image — the output here is the picture itself.
- Local rendering: your code isn't uploaded — snippets often hold keys, internal logic and unreleased implementation that should never leave your machine.
- Crisp export: renders at 2x pixel density by default, so it stays sharp in tweets, docs, covers and slides.
- Built to share: developers paste code on X, in blogs and docs every day, and a good-looking code image reads better and travels further than plain text.
Frequently asked questions
How is this different from the screenshot beautifier?
The screenshot beautifier adds a background, padding and a window frame to an existing bitmap screenshot. Code to image renders straight from text — you paste code and it syntax-highlights and lays it out into a vector-crisp code image, no screen-grabbing needed. Use the beautifier to dress up a screenshot you already have, and this tool to turn a snippet into a beautiful image. They share the same background presets and pair nicely.
Which languages are supported, and is the highlighting accurate?
Ten mainstream languages are built in — JavaScript, TypeScript, Python, Go, Rust, JSON, Bash, HTML, CSS and SQL — plus plain text, and there's an Auto mode that detects the language. Highlighting uses a lightweight local tokenizer covering common tokens (keywords, strings, numbers, comments, function names, tags), which is plenty to make a snippet readable. It isn't a full parser, so a rare edge-case syntax may color imperfectly; picking the language manually is usually most accurate.
Is my code uploaded to a server?
No. All rendering happens locally in your browser with canvas; the code never leaves your device. That matters most for code, which often contains API keys, tokens, internal implementation or unreleased logic you shouldn't hand to an unknown server.
Is the export sharp, and can I just copy-paste it?
Sharp. The export renders at 2x pixel density (2x) by default, so it stays crisp in tweets, docs and zoomed-in covers. You can also Copy to clipboard and paste the finished image straight into Twitter / X, Slack, Notion or anywhere that accepts pasted images — no download-then-reupload. (Writing images to the clipboard works in modern Chrome / Edge / Safari.)
How does it compare to carbon.now.sh / ray.so?
All three share the same idea: render code into a pretty image with syntax highlighting, a window frame, a background and a shadow. Carbon has the most themes and font options; ray.so has a polished UI. Design Cat is lighter, bilingual, pure in-browser with nothing uploaded, with background presets that match the Screenshot Beautifier and a curated (not overwhelming) set, plus Twitter / OG social ratios and 2x crisp export. For quickly turning a snippet into a postable image, Design Cat is the smoother pick; for huge theme libraries and font tweaking, carbon fits better.
Updated · design cat team