Part of the Tools.FAST Network
About Compress.FAST
Reduce file sizes without visible quality loss. Drop up to 1,000 files at once.
Last updated: December 2025
We're building a network of tools that each do one thing well. Compress.FAST handles file compression—images and PDFs, optimized for real workloads. Drop your entire folder and we compress files in parallel, not one at a time.
Less, but better
We deliberately support a focused set of compression workflows and obsess over getting them right. Every format has to earn its place by passing strict checks for:
- Speed – stable p50/p95 times under realistic load
- Quality – no visible artifacts or broken output
- Clarity – plain-English explanations of compression trade-offs
If we can't hit our bar, we don't ship it. We'd rather be the best at the core formats you actually use than half-support a thousand obscure ones.
Right now we're focused on the 80% use case: JPG, PNG, WebP, AVIF images and PDF documents—the files that fill up your inbox, slow down your website, and bloat your storage. As we invest more in infrastructure, we'll expand to additional formats, but only when we can meet the same standards of speed, quality, and clarity.
Speed is architecture, not marketing
We run our own servers in the European Union and control the entire stack—no third-party processing APIs, no "black box" cloud services in the hot path. That lets us tune everything end-to-end:
- Pre-warmed worker pools
- Streaming uploads
- Batch-first queues and bounded concurrency
The result: bulk jobs complete in seconds, not minutes.
"FAST" isn't just our name—it's a promise we hold ourselves to. We publish real p50 compression times on every compressor page so you can see exactly what to expect. More importantly, it keeps us honest: if a compressor is slower than it should be, we know about it and prioritize improvements.
Batch workflows, not afterthoughts
We built this for real bulk workloads—up to a thousand files at once. Even free users get 50-file batches with 3 parallel workers. Business accounts scale to 1,000 files with 10 parallel workers.
Our fair scheduler ensures no single user monopolises the workers. Jobs are distributed by tier (Business, Pro, Free) and then round-robin within each tier. If you upload 100 files, you get your share of workers while leaving capacity for others.
Privacy, not promises
We treat your files as if they were our own internal docs:
- Encrypted in transit (TLS 1.3) and at rest (AES-256)
- Decrypted only in memory for the milliseconds to seconds needed to process
- Auto-deleted after 1 hour, or immediately by you after download
- EXIF metadata stripped by default for privacy and smaller files
- No third-party processing APIs; no AI training on your content
Full details on our Security and Privacy pages.
The Tools.FAST Network
Compress.FAST is part of the Tools.FAST Network—a set of focused utilities that each do one job, fast. One account gets you access to all of them, with shared credits across the network. More tools are coming, each built to the same standard of speed, quality, and privacy.
Current Tools
- Convert.FAST — Bulk file converter. HEIC, JPG, PNG, WebP, AVIF, PDF, DOCX, and 130+ formats. Batch up to 1,000 files.
- Compress.FAST — Image and PDF compression without visible quality loss. Smart compression for professionals.
- PDF.FAST — Coming soon. Professional PDF tools. Merge, split, OCR, and more.
Contact
Questions or feedback? Reach us at hello@tools.fast.