Compress.FAST is a free bulk file compressor that optimizes images, PDFs, Word documents, and PowerPoint presentations without visible quality loss, supporting over 40 formats including RAW camera files.
What is Compress.FAST?
Compress.FAST is an online bulk file compressor for images, PDFs, Microsoft Word (DOCX), and PowerPoint (PPTX). It takes up to 50 files per batch for free users—1,000 for Pro—and outputs compressed versions in original formats (JPG, PNG, GIF, PDF, DOCX, PPTX) or auto-converts HEIC, WebP, and RAW to JPG/PNG. The service runs entirely in the browser, requires no installation, and is developed by Tools.FAST.
Key Features
- Batch compression — Drop up to 50 files at once (guest/free) or 1,000 (Pro), each up to 50 MB (free) or 1 GB (Pro), with up to 3 parallel jobs (6 on Pro).
- 40+ format support — Compresses JPG, PNG, GIF, WebP, AVIF, HEIC, TIFF, BMP, ICO, PSD, plus 26 RAW camera formats (CR2, CR3, NEF, ARW, DNG, etc.) and PDF, DOCX, PPTX.
- Optional image resize — Scale images down by longest edge before compression (e.g., 4K, 1080p, 720p, or custom), applies to standalone images and embedded images in Word/PowerPoint.
- Encrypted & auto-deleted — Files are encrypted in transit (TLS 1.3) and at rest (AES-256), processed on EU servers, and automatically deleted after one hour.
- No sign‑up required for basic use — Guest users get 100 credits/day (1 credit per 5 MB); creating a free account unlocks higher daily limits and compression history tracking.
- Credit refund on no‑size‑reduction — Credits are debited when processing starts and automatically refunded if a job fails, is canceled, or finishes without reducing file size (except for explicit resize operations).
Who is it for?
- Web developers and designers — Optimize batches of JPG/PNG/WebP images and PDFs for faster page loads while preserving visual quality.
- Photographers — Compress high‑resolution RAW files (CR2, NEF, ARW, etc.) and convert them to optimized JPG/PNG without installing desktop software.
- Office workers — Reduce the size of Word and PowerPoint documents with embedded images, maintaining full editability and formatting.
What can you do with Compress.FAST?
- Bulk‑compress images for e‑commerce: Upload up to 1,000 product photos as JPG or PNG, resize them to a uniform 1080px, and download a single ZIP file.
- Reduce PDF portfolios for email: Drop multiple PDFs (up to 1 GB each on Pro) to shrink them while keeping text searchable, links active, and forms fillable.
- Optimize presentations before sharing: Compress PPTX files with embedded images; formatting and slide layouts remain intact.
How does Compress.FAST work?
- Drop files onto the upload area (up to 50 at once for free users). No account needed for basic compression.
- Optional: Set an image resize target (e.g., 1080p) and choose whether to apply it to embedded images.
- Optimization runs automatically — median compression time per file is under 700ms. Files are encrypted in transit and at rest, then deleted after one hour.
- Download each file individually or as a single ZIP archive.
Pricing
Compress.FAST operates on a freemium model. Guest/Free users receive 100 credits per day (each credit covers 5 MB), resetting at midnight UTC. Pro users get 12,000 credits per month, plus 1 GB max file size, 1,000 files per batch, and priority processing. Credits never expire when spent; after exhausting Pro credits, free daily limits resume. No credit card required to start. See full limits at Pricing.
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