What Tablif read on FileSlim's site
FileSlim describes itself as: “Free File Compressor — Nothing Uploaded, No Signup”
- Price model: free tier
- Free tier: Free forever
- Stage: Live, no waitlist
- How it differs: “Built so private school and work documents do not have to pass through an unknown upload server.”
What it is
Calls itself “file compressor”.
- Calls itself: file compressor
“…file compressor”
Where it puts itself
Rules out “upload”. Publishes a comparison page.
- Says it will not: upload
“Built so private school and work documents do not have to pass through an unknown upload server.”
“No upload, ever.”
What it costs
A free tier, free forever.
- Free plan: free forever
“FileSlim is a free, browser-only compressor for images, PDFs, Office documents, SVG, and audio.”
Who it sells to
Sells to businesses and consumers. Built for solo users. Made for businesses, developers and marketers.
- Sells to: businesses and consumers
- Company size: solo / indie
- Made for: businesses · developers · marketers
“Professional file compression for developers, marketers, and businesses”
“One student's frustration with expensive tools led to a better solution”
How it runs
A web app. Runs locally and works offline. Distributed through the npm. Offers an API. AI is a side feature.
- Kind: web
- Runs where: on the device, offline
- Distributed via: npm
- API: yes
- AI role: a side feature
“…browser-only compressor”
“Compression runs on your device with WebAssembly.”
What it works with
Built on MozJPEG, OxiPNG, WebAssembly and 1 more. Names @fileslim/compress on its pages.
- Built on: MozJPEG · OxiPNG · WebAssembly · +1
- Names: @fileslim/compress
“…and an MIT JavaScript SDK (npm install @fileslim/compress).”
“FileSlim is a free, browser-only compressor for images, PDFs, Office documents, SVG, and audio.”
What it offers as proof
Live, no waitlist. Try it without signing up. Publishes docs.
- Trial asks for: nothing
“No account, no API key.”
“Guides -> https://fileslim.com/guides”
Sources
Tablif read these pages, last on 29 Sept 2026. Everything above is what the product says about itself; Tablif does not verify every claim.
Similar products in Tablif Town
- Compress to 100KB: Fit image upload limits, right in your browser
- FilesWow.com: 100+ Free File Tools. No Uploads. 100% Private.
- InImageCompressor: Compress images privately, instantly, right in your browser
- VideoReduce — Free Video Compressor: Free, private video compressor with zero file limits
- ClipShrink: Free, private in-browser video compression using WebAssembly
- ShareFilesFree: Share files free, no sign-ups — any size, no account
- BatchCrunch: Batch video, audio & image compression — nothing uploaded
- Nanofile: Compress files online, no uploads, no account needed.