Free Online Image Tools — Compress, Resize, Convert & Crop
All your image tools in one place — free, instant, and 100% private. No upload to any server.
Free image tools
Compress Image
Reduce file size up to 90% without losing visible quality. Supports JPG, PNG, WebP.
Resize Image
Change photo dimensions for any platform. Presets for Instagram, YouTube, and more.
Convert Image
Convert between JPG, PNG, and WebP instantly. Transparency preserved for PNG and WebP output.
Crop Image
Trim, cut, and crop photos to any ratio. Presets for Instagram, YouTube, Stories, and more.
Also free
Create thumbnails & social images
YouTube thumbnails, Instagram posts, Twitter headers, LinkedIn banners, Facebook covers, OG images — all at exact platform sizes.
From the blog
Image compression tips & guides
How to reduce file size, best formats for web, compression tools compared.
Popular Use Cases
HEIC to JPG
Convert iPhone HEIC photos to JPG for universal sharing.
JPG to PNG
Convert JPG photos to PNG with transparency support.
WebP to JPG
Convert WebP to JPG for universal compatibility.
JPG to WebP
Convert JPG to WebP — 25–35% smaller file size for web use.
Compress for WhatsApp
Reduce photo size before sharing to avoid double-compression.
Compress for Instagram
Pre-compress photos before posting to keep them sharp.
Compress for TikTok
Reduce photo size before uploading TikTok profile and cover images.
Compress for YouTube
Reduce thumbnail and banner size — stay under YouTube's 2MB limit.
Thumbnail Compressor
Compress YouTube and gaming thumbnails to under 2MB before uploading.
Compress to 100KB
Reduce any image to under 100KB for forms and portals.
Compress for Facebook
Optimize photos for Facebook feed and cover photos.
Compress to 50KB
Hit strict 50KB limits for government portals and exams.
HEIC to PNG
Convert iPhone HEIC photos to lossless PNG for editing and archiving.
Compress to 1MB
Reduce large photos to under 1MB for email and web uploads.
Compress to 500KB
Hit 500KB targets for WordPress, CMS, and web-optimized images.
SVG to PNG
Convert SVG logos and icons to PNG for email and social media.
GIF to JPG
Convert GIF to JPG for better photo quality and smaller file size.
GIF to PNG
Convert GIF to lossless PNG with full color depth and transparency.
BMP to JPG
Shrink huge uncompressed BMP files to compact JPG — 90%+ smaller.
Compress to 300KB
Compress photos to under 300KB for CMS, email, and job portals.
Compress JPG Online
Reduce JPG file size without visible quality loss. Fast, free, browser-based.
Compress PNG Online
Shrink PNG files while preserving transparency and sharp edges.
Batch Compress Images
Compress multiple images at once — ZIP download when done.
Image Converter
Convert between JPG, PNG, WebP, HEIC, BMP, TIFF, and ICO — free, no upload.
What Can You Do with CompressImg?
CompressImg is a suite of free browser-based image tools that run entirely on your device — no file is ever uploaded to a server. Everything happens locally using JavaScript, so your images stay private and processing is instant.
Compress Images →
Reduce JPG, PNG, and WebP file size by 50–90% without visible quality loss. Adjust quality from 1–100 and see the before/after size comparison instantly.
Resize Images →
Change image dimensions to exact pixel sizes or use presets for Instagram, YouTube thumbnails, Twitter headers, and more — without recompressing unnecessarily.
Convert Images →
Convert between JPG, PNG, and WebP formats. Also converts HEIC (iPhone photos), BMP, and GIF to standard web formats. Transparency is preserved for PNG and WebP output.
Crop Images →
Trim and crop photos to any aspect ratio with preset options for Instagram (1:1, 4:5), YouTube (16:9), Portraits (9:16), and custom dimensions.
How to Use Any CompressImg Tool — 3 Steps
- 1
Open the tool you need
Go to Compress Image, Resize Image, Convert Image, or Crop Image. All tools open instantly — no sign-up, no install. Drag and drop your image onto the upload area, click to browse, or paste with Ctrl+V. Files up to 20MB are accepted.
- 2
Adjust the settings
Each tool has a simple control: a quality slider for compression (default 80), pixel dimensions for resizing, target format for conversion, or crop ratio for cropping. Defaults are pre-set to the most common use case — you can start without changing anything.
- 3
Download your file
Click Download to save the output to your device. The filename includes the tool name (compressed-, resized-, converted-) so you can easily identify processed files. No watermark, no account, no email required.
Why Use Browser-Based Image Tools?
Your images never leave your device
All processing runs in your browser using JavaScript — no file is sent to any server. This is critical for personal photos, unreleased product images, ID documents, and confidential business content. There is no cloud storage, no data retention, and no account with access to your files.
Instant results — no server queue
Browser-based tools process images using your device's own CPU. There's no server queue, no wait time, and no rate limit. A 5MB photo is typically compressed, resized, or converted in under 3 seconds on a modern device.
Works on any device, no install needed
All CompressImg tools work on Mac, Windows, iPhone, and Android in any modern browser (Chrome, Safari, Firefox). Open the tool, upload your image, download the result — no software to install, no extension to add.
Completely free, no limits
All tools are free with no file count limits, no daily quota, no paid tier, and no watermarks on output. Process as many images as you need at any time — tools run on your device, not on our servers.
Supported Image Formats
CompressImg tools support the most common image formats for compression, resizing, conversion, and cropping. All processing happens in your browser — no format is stored on any server.
| Format | Compression type | Best for | Tool |
|---|---|---|---|
| JPG / JPEG | Lossy | Photos, thumbnails, social media | Compress JPG |
| PNG | Lossless | Graphics, logos, text overlays | Compress PNG |
| WebP | Lossy + lossless | Web images — 25–35% smaller than JPG | Convert to WebP |
| HEIC | Lossy (iPhone) | iPhone photos — convert before sharing | HEIC to JPG |
| GIF | Lossless (animated) | Animated images — convert or compress | Compress GIF |
| BMP | Uncompressed | Large raw files — convert to JPG for 90%+ savings | BMP to JPG |
Compress Images for Specific Platforms
Different platforms apply different compression when you upload an image. Pre-compressing before upload reduces double-compression artifacts and keeps your images sharp where it matters.