Better Flow is a free, open-source screenshot studio that runs entirely in your browser. It transforms raw screenshots into production-ready visuals with browser frames, 3D effects, animations, and backgrounds. No sign-up, no data uploads, and no server roundtrips — all processing happens locally.

Yes. Better Flow is completely free and open source under the Apache 2.0 license. There are no paid tiers, subscriptions, or usage limits. You can use the web app at app.betterflow.site or fork and self-host the code from GitHub.

What file formats can Better Flow export?

Better Flow exports PNG and JPG images at up to 5x scale (4K quality), animated MP4 and WebM video files, and GIF animations. All exports are generated locally in your browser using FFmpeg WASM and WebCodecs.

How is Better Flow different from Shots.so, Screely, or Pika?

Better Flow is open source (Apache 2.0) and processes everything locally in your browser — no uploads, no accounts, and no telemetry. Unlike Shots.so, Screely, or Pika, it supports video animation export (MP4, WebM, GIF), a timeline editor, and 3D perspective transforms. It is also completely free with no paid tier.

Does Better Flow upload my screenshots to a server?

No. Better Flow processes all images and videos locally in your browser using the HTML5 Canvas API, Konva, and FFmpeg WASM. Your screenshots never leave your device. There is zero telemetry and no server roundtrips during editing or export.

What browser mockup styles does Better Flow support?

Better Flow supports Safari and Chrome browser frame mockups, Arc browser style, Polaroid frames, glass frames, and outline device frames. It also includes 3D perspective transforms, depth shadows, and over 100 background styles including gradients, noise, and mesh patterns.

Open Source June 20, 2026 · 5 min read

Best Open Source Screenshot Tools in 2026

Most screenshot beautifier tools are SaaS with subscriptions. Here are the best open-source alternatives you can use for free — and self-host if you need full control.

Most popular screenshot tools — Shots.so, Pika, Snappify — are closed-source SaaS products. They upload your screenshots to their servers, lock features behind paid plans, and can change their pricing or shut down at any time.

For developers who care about privacy, self-hosting, or just not paying a monthly subscription for basic tooling, open source alternatives are worth knowing about.

1. Better Flow — Full-Featured, Browser-Based

Better Flow open source screenshot studio — Better Flow: the most feature-complete open-source screenshot studio.

License: Apache 2.0
GitHub: github.com/betterspacx
Self-hostable: Yes

Better Flow is the most feature-complete open-source screenshot studio available. It runs entirely in the browser — no server required for the core experience. Everything is processed locally using HTML5 Canvas, Konva.js, and FFmpeg WASM.

Key features:

Browser frames (Safari, Chrome, Arc, Polaroid, glass, outline)
100+ backgrounds (gradients, mesh, noise, paper, solids)
3D perspective transforms and depth shadows
Animation timeline with 20+ presets
Video export: MP4, WebM, GIF — all locally
4K image export (up to 5x scale)
Zero telemetry, zero uploads

The studio is built with Next.js 16 (App Router) and TypeScript. The landing page is Astro 5. You can fork either and deploy to Vercel, Cloudflare, or any static host.

2. Carbon — Code Screenshot Tool

Code screenshot with syntax highlighting — Carbon is perfect for turning code into shareable screenshots.

License: MIT
GitHub: carbon-app/carbon
Self-hostable: Yes

Carbon is the most popular open-source tool for creating beautiful code screenshots. It supports syntax highlighting for dozens of languages, custom themes, fonts, and window styles.

Carbon doesn't do browser mockups or background beautification — it's specifically for code. Use it alongside Better Flow: Carbon for the code screenshot, Better Flow to frame and background it.

3. Flameshot — Desktop Screenshot with Annotations

License: GPL-3.0
Platform: Linux, macOS, Windows
Self-hostable: N/A (desktop app)

Flameshot is a desktop screenshot tool with annotation support. It's not a beautifier — it's for taking and marking up screenshots with arrows, text, and highlights. Useful for documentation and bug reports.

Combine with Better Flow: use Flameshot to capture and annotate, then bring to Better Flow to add frames and backgrounds for polished sharing.

Why Open Source Matters for Screenshot Tools

Screenshot beautified with open source tool — Open source tools give you full control — no subscriptions, no uploads.

Three reasons to prefer open-source screenshot tools:

Privacy. Closed-source tools upload your screenshots to their servers. If your screenshots contain sensitive UI, credentials, or unreleased features, that's a risk. Better Flow processes everything locally — nothing leaves your browser.
Longevity. SaaS tools shut down. Dozens of screenshot tools have disappeared in the past five years. Open source tools live as long as someone can run them. You can self-host Better Flow and never worry about it being discontinued.
No subscription trap. Open source tools are free forever. You can fork, modify, and redistribute under the license terms. No monthly fee, no feature paywalls.

How to Self-Host Better Flow

Better Flow's studio is a Next.js 16 app. To self-host:

Fork the repository at github.com/betterspacx
Install dependencies with pnpm install
Run pnpm build and deploy the output to Vercel, Cloudflare Pages, or any Node.js host
All features work — video export, 4K images, everything — with no backend required

The Apache 2.0 license permits commercial use, modification, and distribution. You can self-host it for your team, your company, or integrate it into your own product.

Try Better Flow for free

No account, no uploads, no watermarks. Open source screenshot studio.

Open Better Flow →