FileSlim
Compress files locally — no upload, signup, or server
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FileSlim is a free, browser-only compressor for images, PDFs, Office documents, SVG, and audio. Drop a file in. Compression runs on your device with WebAssembly. Nothing is uploaded to FileSlim. No account, no API key. Also included: batch compression, local PDF tools, and an MIT JavaScript SDK (npm install @fileslim/compress). Built so private school and work documents do not have to pass through an unknown upload server.
PH · launched Sep 29, 2026 · 1 upvote (top 69%) · 0 views
Niche: file and data compression tools · 100 launches, 14 in the last 7 days ▲ +75% · Explore this niche →
Category and tags
- Horizontal
- Workflow automation
- B2C
- Not AI
- Commercial product
- Productivity
Visit website ↗ Source listing ↗
More like this: all 100 launches in file and data compression tools →
Could you build this?
Yes Pre-existing open-source WebAssembly ports exist for image (mozjpeg, oxipng), PDF (pdf-lib, ghostscript WASM), and audio (ffmpeg.wasm) compression, allowing a solo developer to assemble a browser-only tool easily.
Competitors
Other products that read as similar to this one : 1017 launches clear the similarity bar, closest 8 shown.
Attention rank: #783 of 1018 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 316 days after the earliest competitor.
- DropSlim · ph · 2026-09-21 · 1 upvotes · similarity 0.63
- File Compressor · ph · 2026-09-29 · 2 upvotes · similarity 0.62
- UnderLimit: PDF Compressor · ph · 2026-10-09 · 2 upvotes · similarity 0.61
- Smart Client-Side PDF Compressor · ph · 2026-10-13 · 1 upvotes · similarity 0.60
- PDF-Compress.ai · ph · 2026-09-17 · 1 upvotes · similarity 0.60
- Compresser PDF · ph · 2026-10-22 · 1 upvotes · similarity 0.58
- TinySquish · ph · 2026-10-10 · 1 upvotes · similarity 0.58
- CompressHome · ph · 2026-09-15 · 1 upvotes · similarity 0.58
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.