Compress.FAST
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50

Bulk Compress Images Online

Reduce image file sizes while maintaining visual quality.

Drop up to 50 images at once — no install, no sign-up required.

Drop Images to Compress

25 MB per file Up to 50 files 3 parallel 1 credit each

Encrypted EU Servers Auto-delete 1h

⚡ Median compression time (last 10k jobs): 113ms
Resize: Off

How it works

Drop your files

Drop up to 50 images. No account required.

Supports 38+ formats:

JPG PNG WEBP HEIC RAW

We optimize carefully

→ Smaller files, no visible quality loss
→ Encrypted in transit & at rest
→ EU servers, auto-deleted in 1 hour

Get optimized files

Download individually or as a single ZIP.

→ JPG & PNG stay the same format
→ HEIC, WebP, RAW, etc. become JPG
→ Transparent images become PNG

About Image Compression

Image compression reduces file sizes while attempting to preserve visual quality. Our compressor automatically detects each image format and applies format-specific compression settings.

Supported Formats

  • JPG/JPEG: Best for photographs. Lossy compression with adjustable quality.
  • PNG: Best for graphics, screenshots, and images with transparency. Optimized for quality.
  • WebP: Modern format with excellent compression for both photos and graphics.
  • AVIF: Next-generation format with superior compression efficiency.

Image Compression Guides

How to Reduce Picture Megabytes

Learn how to reduce picture megabytes using practical techniques. Discover the best formats like WebP, compression settings, and tools to save space.

8 min read • January 09, 2026

How to Compress Files for Email Without Losing Quality

Learn how to compress files to email using built-in tools, smart software, and cloud solutions. Send large attachments without errors or quality loss.

8 min read • January 08, 2026

Frequently Asked Questions

Is online image compression safe?

Yes. Your images are encrypted in transit (TLS 1.3) and at rest (AES-256). Files are processed on EU servers and automatically deleted after 1 hour. We don't view, share, or store your images beyond the processing window. No account required for basic usage.

Does image compression affect print quality?

For web/screen use: Our compression is optimized for display quality—differences are typically imperceptible. For professional printing: We recommend keeping original files for print production. Compressed images work well for proofs and drafts, but originals ensure maximum print quality.

What image formats can I compress?

We support the most common image formats: JPG/JPEG (photographs), PNG (graphics with transparency), WebP (modern web format), and AVIF (next-generation format). Drop any of these formats and we'll automatically detect and optimize them.

Which format gives the best compression?

For photographs: JPG offers the best balance of quality and compatibility. For graphics/screenshots: PNG preserves sharp edges and text. For transparency: PNG maintains alpha channels. Our universal compressor outputs JPG (for photos) or PNG (for images with transparency).

What's the difference between lossy and lossless compression?

Lossy (JPG, WebP, AVIF): Discards some image data for smaller files. Best for photos where tiny quality loss is acceptable. PNG: Our compressor uses palette-based optimization (similar to TinyPNG) which reduces colors for dramatic size savings while preserving sharp edges. Best for screenshots, logos, and graphics. For true lossless archival, keep your original files.

How do I compress multiple images at once?

Simply drop all your images at once! We support batch compression—up to 50 files simultaneously. Files are processed in parallel for maximum speed. Download individually or wait for all to complete and download as a ZIP.

How do I choose the right compression for my use case?

Email/messaging: Maximum compression acceptable—use JPG or WebP. Website images: Use WebP with JPG fallback for broad support. Social media: Platforms recompress anyway—moderate compression is fine. Archival: Keep original files for true lossless preservation. Modern web apps: AVIF for cutting-edge efficiency.

What are the file size and batch limits?

TierMax File SizeMax Files/BatchParallel Jobs
Guest/Free25 MB50 files3 at once
Pro200 MB200 files6 at once
Business1 GB1000 files10 at once

Note: Batch and parallel processing limits apply site-wide across all compressors.

How are credits calculated for compression?

Cost: 1 credit per 25 MB

How it works:

  • Files up to 25 MB: 1 credit (minimum)
  • 26-50 MB: 2 credits
  • 51-75 MB: 3 credits
  • 76-100 MB: 4 credits
  • Over 1000 MB: 40 credits (maximum cap)

Example: A 5 MB file = 1 credit. A 95 MB file = 4 credits.

Why per-megabyte? Larger files require more processing resources (memory, CPU, bandwidth, storage).

What are my daily and monthly credit limits?

Credit allocations vary by account tier:

TierCreditsReset
Guest50/dayMidnight UTC
Free50/dayMidnight UTC
Pro10,000/monthBilling cycle
Business30,000/monthBilling cycle

Note: With 1 credit per file, Guest/Free users can compress 50 files per day. Pro users can compress 10,000 files per month.

Answers at a Glance

Quick answers to common questions.

Choose Your Plan

One subscription unlocks the entire Tools.FAST Network. Plans cover Compress.FAST, Convert.FAST, PDF.FAST (soon), and all future tools.

Monthly Annual 4 Months Free

Free

$0

For occasional personal use

  • 25 MB per file
  • 50 files per batch
  • 3 parallel jobs
  • 50 credits/day
  • Standard priority
  • Email support
Sign Up Free

No sign-up required. Create an account for your own credit pool.

Popular

Pro

$9 /month

For independent work

  • 200 MB per file
  • 200 files per batch
  • 6 parallel jobs
  • 10,000 credits/month across Tools.FAST
  • High priority
  • Email & chat support
  • One subscription for the entire Tools.FAST network

Business

$19 /month

1 seat

For production scale

  • 1 GB per file
  • 1000 files per batch
  • 10 parallel jobs
  • 30,000 credits/month across Tools.FAST
  • Add seats to invite team members
  • Highest priority
  • Priority email & chat support
  • One subscription for the entire Tools.FAST network

How Credits Work

  • Usually 1 credit per file. Exact cost shown before you start.
  • Credits refresh monthly on your billing cycle.
  • Unused credits roll over, capped at your plan's monthly amount.
  • One subscription, all sites. Works across Compress.FAST, Convert.FAST, and future tools.
View all Compress.FAST limits by tier → View all Convert.FAST limits by tier →

What's New in Image Compressor

Latest improvements across all image tools

Last updated January 5, 2026
Jan 5, 2026

Added Resize options to all image compressors.

Dec 26, 2025

Initial release with JPG, PNG, and universal image compression.