100% Client-Side · Zero Uploads
Compress hundreds of images in seconds — without losing quality.
Drag in your entire folder. Bulk Image Compressor shrinks JPG, PNG and WEBP files right inside your browser — no servers, no accounts, no paid APIs, ever.
- Cost
- 100%
- Limits
- ∞
- Privacy
- 0
- Speed
- ⚡
Free forever
No upload limits
Servers involved
Parallel & fast
Drop your images below
PNG, JPG, JPEG, WEBP and SVG supported. Everything is processed locally on your device.
Drag & drop images here
or use one of the options below · you can also paste an image with Ctrl/Cmd+V
PNG
JPG / JPEG
WEBP
SVG (pass-through)
HEIC (if supported)
Why teams pick us
Everything a bulk workflow needs
Fast Compression
Parallel Web Workers crunch through hundreds of images without freezing your tab.
Privacy First
Files never leave your device. No servers, no APIs, no data collection of any kind.
Batch Everything
Drop an entire folder, resize, rename and re-export in one pass.
Format Conversion
Convert on the fly between JPG, PNG and WEBP as you compress.
Before / After Compare
Drag the slider to compare original and compressed images side by side.
One-Click Export
Download images individually or grab everything at once as a ZIP.
Process
Three steps, zero uploads
-
01
Add your images
Drag & drop files or a whole folder, browse manually, or paste straight from your clipboard.
-
02
Tune your settings
Pick a quality level, output format, and optional max dimensions — then hit Compress All.
-
03
Download the results
Grab files one by one or export the whole batch as a single ZIP archive.
Loved by teams
What people are saying
"We batch-compress our entire product photo library before every launch. It just works, and nothing touches a server."
"Cut our blog's average page weight by more than half in one afternoon. The before/after slider makes it easy to trust the quality."
"No account, no watermark, no upload cap — exactly what I needed for a folder of 400 event photos."
FAQ
Common questions
Are my images uploaded to a server?
No. Every image is decoded and compressed locally using the Canvas API and Web Workers. Nothing ever leaves your device.
Is there a limit on how many images I can compress?
No hard limit — you can queue hundreds of images. Processing runs across parallel Web Workers so your browser stays responsive.
Which formats are supported?
JPG, JPEG, PNG and WEBP are fully supported for compression and conversion. SVG passes through uncompressed, and HEIC support depends on your browser's decoder.
Is Bulk Image Compressor really free?
Yes — completely free, with no account, watermark or hidden limits. No paid APIs are used anywhere in the app.