Image Compression
Reduce file sizes by up to 90% using MozJPEG, OxiPNG, libwebp, libavif and JPEG XL. Choose format and quality per image or apply to all at once.
Free Image Editor & Compressor
Compress, crop, resize, watermark and adjust all in your browser
Professional image editing without uploads. Everything runs locally using WebAssembly. GPS, EXIF and metadata removed during compression.
Drop images here or click to browse
Supports JPEG, PNG, WebP, AVIF, JXL, HEIC, GIF • Up to 20 images • Max 5MB each
100% Private
No uploads ever
WebAssembly
Near-native speed
Always Free
No limits, no watermarks
Compress image to a specific file size
Compress images to improve website speed, meet portal upload limits, or reduce file size for job applications and government forms. All processing stays in your browser.
Everything you need to edit and optimise images
Fast, private, and browser-based. No account required.
Watermark Tool
Add text watermarks with custom size, opacity, position and colour. Apply to a single image or batch-watermark your entire collection.
Brightness, Contrast & Saturation
Fine-tune exposure and colour with a live preview. Adjust a single image or batch-apply to all images simultaneously.
Resize & Scale
Resize to exact pixel dimensions or scale by percentage. Batch resize all images to a max width with automatic aspect ratio preservation.
Crop
Crop with free, 1:1, 4:5, 16:9 and 9:16 aspect ratio presets. Large touch targets make precise cropping easy on mobile.
Batch Processing
Upload up to 20 images. Apply format, watermark, adjustments or resize to all images at once. Download as a ZIP or individually.
Before/After & Undo
Compare original and edited image side by side at any time. Undo and redo every transform including crop, resize, watermark and adjustments.
EXIF Viewer & Privacy
See embedded camera model, date taken and GPS presence before export. All metadata removed during compression.
AVIF, WebP & HEIC Conversion
Convert between all modern formats. AVIF to JPG, JPG to AVIF, WebP to JPG, PNG to AVIF and more. All browser-based.
Free image conversion tools
Every tool runs in your browser. Nothing is uploaded.
Adjust Image
Brightness, contrast, saturation, hue, temperature, sharpen and more. No uploads.
Crop Image
Crop, rotate, flip, straighten. Social presets for Instagram, YouTube and more. No uploads.
Image Metadata Viewer
View EXIF data, GPS location, camera info. Remove metadata with one click. No uploads.
Image Color Picker
Extract dominant colors. HEX, RGB, HSL codes. Copy to clipboard. No uploads.
SVG to PNG
Convert SVG to PNG at 1x to 4x scale. Transparency preserved. No uploads.
Resize Image
Resize to any pixel dimensions. No white space, no distortion. No uploads.
Resize for Instagram
Portrait, square, story, reel. All Instagram sizes in one place.
Resize for YouTube
Thumbnail 1280x720. Channel banner 2560x1440. No account.
Resize for Facebook
Feed, story, cover photo. Every Facebook format.
Resize for X (Twitter)
Feed image, profile and header banner sizes.
Resize for LinkedIn
Feed post, banner and profile. Professional quality.
HEIC to JPG
Convert iPhone HEIC photos to JPG. No uploads.
JPG to WebP
25 to 34% smaller than JPEG. Faster web pages.
AVIF to JPG
Convert AVIF to JPEG. Works in every application.
JPG to AVIF
Up to 50% smaller than JPEG. Best compression.
Images to PDF
Combine multiple images into one PDF.
All tools
Browse the full list of free image tools.
Why compress and optimise images?
Compressing images improves website speed, boosts SEO rankings, and reduces page load time.
Faster website load times
Smaller images reduce page weight and improve Core Web Vitals scores.
Better SEO rankings
Google rewards fast-loading pages. Optimised images are one of the highest-impact improvements.
Meet upload size limits
Government portals, job applications and university forms require images under 50KB or 100KB. Compress to exact size.
Protect your privacy
GPS, EXIF and camera data removed during compression. iPhone user? Convert HEIC to JPG first.
Frequently asked questions
How much can I compress my images?
Most images compress by 60 to 90% without visible quality loss. WebP and AVIF typically achieve the best ratios. For strict size targets use the compress to exact size tools.
Can I compress an image to a specific file size like 50KB or 100KB?
Yes. ImgTweak has dedicated tools for 20KB, 50KB, 100KB, 200KB, 500KB and 1MB. There are also under-limit tools (under 50KB, under 100KB) for portal submissions. These are commonly required by government portals, job application systems and university forms.
What image formats does ImgTweak support?
The main compressor supports JPEG, PNG, WebP, AVIF, JPEG XL and HEIC. Dedicated converters include AVIF to JPG, AVIF to PNG, JPG to AVIF, PNG to AVIF, WebP to JPG, WebP to PNG, HEIC to JPG, PNG to JPG, JPG to WebP, PNG to WebP, Images to PDF and PDF to Images.
Can I process multiple images at once?
Yes. Upload up to 20 images and use batch operations to apply the same format, watermark, adjustments or resize to all of them at once. Download everything as a ZIP or individually.
Are my images safe and private?
Absolutely. Your images never leave your device. All processing happens locally in your browser using WebAssembly. No uploads, no tracking, no server storage.
Is ImgTweak really free?
Yes, 100% free with no hidden costs, no watermarks on exported images, and no feature limits. All processing runs in your browser so there are no server costs to pass on.