Compress images up to 90%
Powered by MozJPEG and WebP. Runs entirely in your browser — your images never leave your device.
Drop your images here
or click to select files
How It Works
Drop
Drag and drop your JPEG, PNG, or WebP images into the compressor.
Compress
WebAssembly-powered MozJPEG and WebP encoders shrink your files in the browser.
Download
Download individual files or grab them all at once in a ZIP archive.
Why Compress Images in Your Browser?
Your images never leave your device
Most online compressors upload your files to a server, shrink them there, and send them back. TinImg does the whole thing in your browser using WebAssembly builds of MozJPEG and WebP. Nothing is uploaded, nothing is stored, and nothing is logged. That matters if you're working with client photos, unreleased product shots, screenshots of internal tools, or anything you'd rather not hand to a third party. It also means there is no file-size cap and no daily limit — the only constraint is your own machine.
Who it's for
Web developers shipping faster pages and better Core Web Vitals scores. Bloggers and writers who want posts that load quickly on mobile. Online sellers preparing product photos for Shopify, Etsy, or WooCommerce, where every extra second of load time costs conversions. Anyone emailing a batch of photos who keeps hitting the attachment limit. If you have images that need to be smaller without looking worse, this tool was built for you.
The formats it supports, and why
TinImg handles JPEG, PNG, and WebP — the three formats that cover almost everything on the web. JPEG is encoded with MozJPEG, a tuned encoder that typically saves another 10% over a standard JPEG at the same visual quality. WebP usually lands 25–30% smaller than JPEG and is supported by every current browser. PNG is kept lossless for screenshots and logos where sharp edges matter. Not sure which to pick? The format comparison guide walks through it.
How it compares to upload-based tools
Server-based tools like the well-known upload-and-download compressors are convenient, but they see every file you process, they cap how many images you can do at once, and you wait on a round trip to their servers. Running compression locally removes all three problems: there's no queue, no upload wait, and no privacy trade-off. The output is the same proven MozJPEG and WebP encoding those tools use — it just happens on your side of the connection. Curious how the compression itself works? Read how image compression works.
Learn More
JPEG vs PNG vs WebP: Which Format Should You Use?
Understanding the strengths and trade-offs of the three most common image formats on the web.
5 min read
How Image Compression Works (Without Losing Quality)
A plain-language explanation of what happens when you compress an image, and why smaller doesn't always mean worse.
6 min read
Best Image Sizes for Web Performance in 2026
Practical guidelines for image dimensions, file sizes, and responsive delivery that keep your site fast.
5 min read
How to Reduce Image File Size for Email
Email clients are picky about images. Learn the best sizes, formats, and compression settings for email that actually work.
4 min read
MozJPEG vs Standard JPEG: What's the Difference?
MozJPEG produces smaller JPEG files with no quality loss. Here's how it works and why you should be using it.
5 min read
Image Compression for E-Commerce: Faster Stores Sell More
How product image weight affects conversions, the right sizes for Shopify, WooCommerce, and Etsy, and how to compress without making your products look worse.
7 min read
How to Prepare Images for Social Media (Sizes & Formats by Platform)
The right dimensions, file-size limits, and formats for Instagram, X, Facebook, and LinkedIn — so your images stay sharp instead of getting crushed by the platform.
6 min read
Image Compression FAQ: 15 Common Questions, Answered
Short, direct answers to the questions people actually ask about compressing images — quality loss, formats, transparency, EXIF data, and more.
6 min read
How to Optimize Images for WordPress (Speed, Plugins & Core Web Vitals)
A practical workflow for compressing images on WordPress — what to do before upload, when a plugin helps, and how images affect your Core Web Vitals.
7 min read
AVIF vs WebP: Which Next-Gen Format Should You Use?
AVIF compresses smaller than WebP, but it isn't always the right choice. Here's how the two modern formats compare on size, quality, support, and speed.
7 min read
Frequently Asked Questions
Is TinImg really free?
Yes, completely. There is no account, no watermark, and no file-size or daily limit. The compression runs on your own device instead of a paid server, so there is nothing to charge for.
Do my images get uploaded to a server?
No. The MozJPEG and WebP encoders load once from a CDN, then run entirely in your browser through WebAssembly. Your image data is never transmitted, stored, or logged.
How much smaller will my images get?
For most photographs, a quality-80 MozJPEG or WebP re-encode cuts the file by 60–90% with no visible difference at viewing size. Exact savings depend on the source image.
Which format should I choose — JPEG, PNG, or WebP?
Use JPEG (MozJPEG) or WebP for photographs, and PNG for screenshots, logos, and graphics with sharp text. WebP is the smallest for the web; JPEG is the safest for email. See the JPEG vs PNG vs WebP guide for the full decision tree.
What quality setting should I use?
For photographs, quality 75–85 is the sweet spot — visually indistinguishable from the original at a fraction of the size. Below 60, artifacts become visible; above 90, files grow with no visible gain.
Can I compress many images at once?
Yes. Drop a whole batch in and download them individually or all at once as a ZIP archive. There is no limit on how many you process.