Tools for reducing photo file size, changing pixel dimensions, cropping and converting between HEIC, WebP, PNG and JPG. First decide where the image will be used: an email attachment, a website, a form upload or print each need different sizes and quality.
Good to know: Free-use terms vary by tool and plan. When a card lists no tool-specific limit, check quotas, watermarks and export terms on the official page.
TinyPNG is a web tool that compresses JPEG, PNG, WebP, AVIF, JPEG XL and animated PNG images and can convert between them; the free version needs no account but limits how many images and how large they can be at once.
Compress, Resize or Convert Images
iLoveIMG is a web service that bundles image tools such as compress, resize, crop, rotate and convert, with a free Basic plan that shows ads and paid Premium and Business plans.
Compress, Resize or Convert Images
ImageOptim is a free, open-source Mac app that you drag images into to shrink PNG, JPEG, GIF and SVG files; it is lossless by default and offers an optional lossy mode.
Compress, Resize or Convert Images
Good to know: Requires desktop installation.
XnConvert is a desktop batch image converter from XnSoft for Windows, macOS and Linux that resizes, crops, converts and edits many images with one saved list of actions.
Compress, Resize or Convert Images
Good to know: Requires desktop installation.
Squoosh is a Google Chrome Labs web app that compresses and resizes images in your browser and, according to its own pages, does the work locally instead of sending the image to a server.
Compress, Resize or Convert Images
TinyWow is a multi-tool website with dozens of PDF, image, video and file conversion tools in the browser, usable without registration, plus an optional paid plan.
Compress, Resize or Convert Images
Adobe Express can combine object removal with preparing a photograph for a social media layout.
Compress, Resize or Convert Images
Image Toolbox is an open-source Android app that combines background removal, AI upscaling, OCR, resizing, filters and format conversion.
Compress, Resize or Convert Images
Photopea supports browser-based background separation with direct control over selections, layers and masks.
Compress, Resize or Convert Images
Shrink the same photo with two quality settings and compare the results side by side at full zoom; look for damage on faces, text and flat areas such as sky. If you have many files, try batch processing and check how file names are saved with a few files first.
Some tools process images in your browser and others upload them to a server; check this and how long files are kept on the official page. Location and device data in photos (EXIF) is kept by some tools and removed by others, so check the output before sharing it.
Is resizing the same as compressing? No. Resizing reduces the pixel dimensions, while compression saves the image at the same dimensions in a way that takes less space. For the web you often need both.
Why won’t my HEIC photos open? HEIC is the default format on some phones, and not every program or website supports it. Converting to JPG improves compatibility; WebP or AVIF can give smaller files, but first check that the place you upload to accepts them.
This comparison is based on published official documentation. It is not a hands-on test or a quality ranking. Unknown features are not treated as verified.
| App name | Where will you use it? | Free output | No account needed | No watermark | Works offline | Batch processing | Content language | Good to know / Sources and review date |
|---|---|---|---|---|---|---|---|---|
| TinyPNG | Website | Yes | Yes | Not verified | No | Yes | Not verified | Sources and review date |
| iLoveIMG | Website | Yes | Not verified | Not verified | Not verified | Yes | Not verified | Sources and review date |
| ImageOptim | Desktop | Yes | Not verified | Not verified | Not verified | Yes | Not verified | Sources and review date |
| XnConvert | Desktop | Not verified | Not verified | Not verified | Not verified | Yes | Not verified | Sources and review date |
| Squoosh | Website | Not verified | Not verified | Not verified | Not verified | Not verified | Not verified | Sources and review date |
| TinyWow | Website | Yes | Yes | Not verified | No | Not verified | Not verified | Sources and review date |
| Adobe Express | Website | Yes | Not verified | Not verified | Not verified | Not verified | Not verified | Sources and review date |
| Image Toolbox | Android | Not verified | Not verified | Not verified | Not verified | Yes | Not verified | AI-generated details may differ from the original image. Sources and review date |
| Photopea | Website | Not verified | Not verified | Not verified | Not verified | Not verified | Not verified | Sources and review date |