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image100% Browser-BasedUpdated Jul 2026

Image Compressor

A premium, privacy-first image compression tool that works entirely in your browser. Reduce the file size of JPG, PNG, WEBP, and AVIF images without uploading them to any server. Compare original and compressed images side-by-side, batch process multiple files at once, and download individually or as a ZIP archive. All processing happens locally using Canvas API and Web Workers — your images never leave your device.

Your Files Never Leave Your Device

All image compression happens entirely in your browser using the Canvas API. Your images are never uploaded to any server.

Upload Images

Drag & drop images, click to browse, or paste from clipboard

Ctrl+V
JPG · PNG · WEBP · AVIF · BMP · GIF · TIFFUp to 100.0 MB eachUp to 100 filesPrivate · Browser-based

Supported Formats

Upload and compress a wide range of image formats

JPEG

Joint Photographic Experts Group

PNG

Portable Network Graphics

WEBP

WebP image format

AVIF

AV1 Image File Format

BMP

Bitmap image file

GIF

Graphics Interchange Format

TIFF

Tagged Image File Format

Frequently Asked Questions

Everything you need to know about compressing images

How does browser-based image compression work?
Our image compressor uses the Canvas API built into modern browsers. When you upload an image, we draw it onto a hidden canvas element and export it with your chosen quality and format settings. This process is mathematically lossy for JPEG/WebP/AVIF and lossless for PNG. Every byte stays on your device — nothing is uploaded to any server.
What image formats are supported?
You can upload JPG, JPEG, PNG, WEBP, AVIF, BMP, GIF (static), and TIFF files. Output formats include JPEG, PNG, WEBP, and AVIF. You can also choose to keep the original format while still reducing file size.
What compression mode should I choose?
We recommend 'Balanced' mode (quality 80) for most use cases — it provides an excellent balance between file size reduction and visual quality. Use 'Lossless' for archival purposes where every pixel matters. Use 'Maximum Compression' for web images where smallest file size is critical, like email attachments.
Is there a limit on file size or batch count?
Each image can be up to 100 MB in size. You can compress up to 100 images in a single batch. For very large files or large batches, processing time depends on your device's performance — Web Workers help keep the interface responsive.
Does the tool support batch processing?
Yes! Upload multiple images at once (drag & drop, browse, or paste), and our batch processor will compress them all. You can monitor individual progress, see overall stats, and download results as individual files or a single ZIP archive.
Can I resize images while compressing?
Yes. Enable the resize option to scale images during compression. You can set exact pixel dimensions or a percentage, maintain aspect ratio, and choose from common presets like Full HD (1920×1080) or thumbnail sizes.
How does the comparison slider work?
The live comparison view shows your original image on the left and the compressed result on the right. Drag the divider slider to compare specific areas. You can also switch to side-by-side mode, zoom in, and pan around to inspect detail preservation closely.
Is my privacy protected?
Absolutely. All image compression happens entirely in your browser using the Canvas API and Web Workers. Your files are never uploaded, copied, or transmitted to any server. No third-party services, no analytics tracking the content of your images, no data leaving your device.

How Image Compression Works

A complete guide to reducing image file sizes

Understanding Image Compression

Image compression reduces file size by removing or simplifying image data. Lossless compression preserves every pixel (like PNG), while lossy compression (like JPEG) discards some detail the human eye barely notices. Our tool lets you choose the right balance for your needs.

Choosing the Right Format

JPEG is best for photographs with smooth gradients. PNG excels at graphics with text, logos, or transparency. WebP offers superior compression for web use with similar quality to JPEG but 25-35% smaller files. AVIF provides even better compression but has limited browser support.

Quality vs File Size Trade-off

Higher quality settings (90-100) retain more detail but produce larger files. Quality 70-85 typically offers an excellent balance — significant size reduction with minimal visible difference. Quality below 50 is useful only when file size is the top priority.

Batch Processing Best Practices

When compressing multiple images, apply the same settings to all files for consistent results. If images need different treatment, process them in separate batches. Always review the comparison view to ensure quality meets your standards before downloading.

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