Image optimizer tool
Optimize an image
Compress, crop, rotate, and filter processed entirely in this browser tab.
Drop an image here
or click to browse
JPEG, PNG, WebP, AVIF, BMP, TIFF · up to 100 MB
Five steps to a lighter image
Every step is undoable until you download, so it's safe to experiment.
Drop in an image
Drag a file onto the tool or click to browse. JPEG, PNG, WebP, AVIF, BMP, and TIFF are all accepted, up to 100 MB.
Pick a format and quality
WebP is the default for a reason it balances compression and compatibility. Slide quality down until the preview still looks right to you.
Crop or rotate if needed
Switch to the Crop tab for a platform preset, or fine-tune position and size by hand. Rotate in 90° steps from the Rotate tab.
Adjust filters if you want them
Brightness, contrast, saturation, blur, sepia, and grayscale are all optional, live-previewed, and non-destructive until you apply them.
Apply changes and download
Click Apply Changes to re-render with your settings, check the size reduction shown, then download. Nothing is uploaded at any point.
WebP, AVIF, JPEG, or PNG: how to actually choose
The format matters more than almost any other setting here. Picking the right one for the job usually saves more file size than fine-tuning quality ever will.
| Format | Best for | Size vs. JPEG | Browser support |
|---|---|---|---|
| WebP | General-purpose default for photos and web graphics | About 25–35% smaller at equal visual quality | All modern browsers |
| AVIF | Maximum compression when file size is the top priority | Often 40–50% smaller than JPEG | Most modern browsers; encoding support varies by device |
| JPEG / JPG | Universal compatibility for photos with no transparency | Baseline comparison | Every browser and device made in the last two decades |
| PNG | Logos, icons, screenshots, and anything needing transparency | Larger for photos, smaller for flat graphics | Universal |
| TIFF / BMP | Archival or print workflows outside the web | Much larger, uncompressed or lightly compressed | Desktop software; rarely used directly on the web |
See MDN's image format guide for the full technical breakdown of each format's compression method.
Six mistakes that waste the compression you just did
Most oversized images on the web aren't a tooling problem they're one of these habits.
Exporting everything as PNG by default
PNG is lossless, which makes it the largest common format for ordinary photos a photo that could be 150 KB as WebP might sit at 900 KB as PNG for no visual benefit.
Reserve PNG for images that genuinely need transparency or hard-edged graphics like logos and icons. Use WebP or JPEG for photos.
Pushing quality all the way down to save a few extra kilobytes
Below roughly 60–70% quality, JPEG and WebP both start showing visible blocking artifacts, especially around text and sharp edges.
Drop quality in small steps and check the live preview each time. Most photos hold up fine between 70–85%, with no visible difference from the original.
Uploading a 4000px-wide photo straight from a phone
A typical blog or product page never displays an image wider than 1200–1920px. The browser still has to download the full file before scaling it down, which slows the page for no visual gain.
Set Max Width to match where the image will actually display, not the camera's native resolution.
Cropping after uploading to a CMS instead of before
Cropping inside WordPress or a similar CMS after upload still stores the original full-size file, so the storage and bandwidth cost doesn't actually go away.
Crop and resize before the image ever reaches your CMS's media library, using a platform preset if you know where it's going.
Assuming AVIF always wins
AVIF often produces the smallest file, but browser-side AVIF encoding support still varies, and decode time on older devices can be slower than WebP.
Use WebP as the safe default. Reach for AVIF specifically when file size is the priority and you've confirmed it renders correctly where it's going.
Not checking the result on the actual background it'll sit on
A transparent PNG or a color-adjusted photo can look correct in isolation and wrong once placed on your site's real background color.
Preview the downloaded file in the actual page or document before treating it as final.
Where a browser-based optimizer fits in your workflow
People land here from a few different directions. Here's how this tool actually fits each one, stated plainly rather than as a sales pitch.
"I need to optimize images for my WordPress site"
You want smaller media-library files without adding another plugin to maintain.
Optimize and crop the image here first, then upload the finished file to WordPress. No plugin, no server processing on your hosting.
"I want an image optimizer for Mac"
You're looking for something that works on macOS without installing desktop software.
This runs in Safari, Chrome, or any modern browser on macOS nothing to install, nothing to keep updated.
"Is there a free online image optimizer, like ezgif?"
You want a fast, no-signup web tool, the same category ezgif and similar sites serve.
Same category, different focus: this tool is built specifically around format conversion plus crop, rotate, and filters in one pass, with everything staying on your device.
"Does this replace a builder's built-in optimizer, like Elementor's?"
Page builders sometimes compress images automatically on upload.
It doesn't need to replace that — use this beforehand to control format and crop precisely, then let your builder handle the rest.
"I want an image optimizer pro version, with more control"
You want manual control over quality, size, and format rather than an automatic one-click compress.
Every setting here is manual and visible: format, quality percentage, max width, crop, rotation, and six filters, all before you commit to a download.
Crop ratios for common platforms
These match the presets built into the Crop tab above — pick the platform and the ratio is set for you.
| Platform | Use | Ratio |
|---|---|---|
| Instagram post | Square feed post | 1:1 |
| Instagram / Facebook story | Full-screen vertical story | 9:16 |
| Facebook cover photo | Profile page banner | 16:9 |
| YouTube thumbnail | Video thumbnail | 16:9 |
| Pinterest pin | Vertical pin image | 2:3 |
| LinkedIn post image | Feed post attachment | 1.91:1 |
| Twitter / X header | Profile header banner | 3:1 |
Questions people ask before optimizing an image
Direct answers on formats, privacy, WordPress, and how this compares to other tools.
Yes. There's no account, no daily limit, and no paid tier for any feature compression, crop, rotate, and filters are all included.
It's fully online nothing to install. It runs in the browser tab you already have open, on Windows, macOS, Linux, or a tablet.
Yes, in any modern browser on macOS: Safari, Chrome, Firefox, or Edge. There's no separate Mac app because none is needed.
No, and that's by design this is a standalone browser tool, not a plugin you install on your site. The common workflow is optimizing an image here first, then uploading the finished file to WordPress's media library, so you're not adding another plugin to maintain.
Both sit in the same category: free, no-signup, browser-based image tools. This one is built specifically around pairing format conversion (WebP, AVIF, JPEG, PNG) with crop, rotate, and filter controls in a single pass, with processing kept on your device rather than a server.
Yes. Click Download Image and the finished file saves directly to your device in the format you selected. Nothing is stored anywhere else.
No. Every step, decoding, resizing, cropping, filtering, and re-encoding, happens inside your browser using the Canvas API. The image never leaves your device.
WebP is the safest general default for photos on a website: strong compression with broad browser support. Use AVIF if squeezing out maximum size reduction matters more than universal support, and keep PNG for logos, icons, or anything needing transparency.
It depends heavily on the source file and format, but converting an uncompressed or lightly compressed photo to WebP at 75–85% quality commonly reduces file size by 60–90% with no visible quality loss.
Optimize your first image
No signup screen. No upload wait. Just a smaller file.