What This Section Covers
This section routes you to free, legal, browser-based tools for converting, compressing, and resizing images. You will not need an account, a credit card, or a download. Each tool below works right in your browser, and the free versions are genuinely useful for everyday image tasks.
The tools are ranked in the order you should consider them, based on how well they balance power, ease of use, and how much they let you do without paying. If you just need one job done fast, start at the top. If you have a specific format or size in mind, read the notes under each name.
TinyPNG
TinyPNG is the first place to try for compressing JPEG, PNG, WebP, and AVIF files. The free page lets you upload up to 20 images at once, each up to 5 MB, and it also includes up to 3 free image conversions per session. It does not ask for an account or a card, and there is no watermark. The compression is smart: it reduces file size while keeping visual quality close to the original, which makes it the best all-rounder for most people. It works in any modern browser, and you can drag and drop files straight from your desktop. If your image is larger than 5 MB, you will need to resize it first or use another tool on this list.
Adobe Express Free Image Resizer and Compress
Adobe Express offers two separate free tools: one for resizing and one for compressing. The resizer handles JPEG, JPG, PNG, and WebP, and the compressor handles JPEG, JPG, and PNG. Files can be up to 40 MB, which is much larger than TinyPNG's limit. The page explicitly says "Free to use" and "No credit card required." It does not state whether an account is needed, but in practice you can use the basic resize and compress functions without signing in. This is the best choice if you have a large file or need to resize to exact pixel dimensions. The interface is clean and fast, though it does show occasional prompts to try other Adobe tools. It works in any browser, and you do not need to install anything.
Squoosh
Squoosh is a free, open-source image compressor and format converter built by Google. It works entirely in your browser, so your images never leave your device. It supports JPEG, PNG, WebP, and AVIF, and it gives you a side-by-side slider to compare the original and compressed versions in real time. No account or sign-up is required. This is the best tool for fine-tuning: you can adjust quality, compression method, and even resize the image before saving. The interface is a bit more technical than TinyPNG, but it is still straightforward. It works in any modern browser, and because it is open source, you can even download and run it offline if you want. If you care about exact control over the trade-off between file size and quality, this is the one to use.
ImageCompressify
ImageCompressify is a free, unlimited image converter and compressor that supports over 40 formats. It can also shrink an image to a specific target file size, which is handy if you have a strict upload limit. The service says it is free, unlimited, with no signup, no credit card, and no watermarks. It works in your browser, and you can drag and drop multiple files at once. The interface is simple, though not as polished as the top three. It is a good fallback if you need a format that the others do not support, or if you need to convert a batch of files in one go. It works in any browser, and there is no account to create.
MiniPx
MiniPx offers free compression, conversion, and resizing for single images, with no signup and no watermark. The free tier allows batches of up to 5 files at a time. It supports common formats like PNG, JPG, and WebP, and it is a decent option if you need a quick, no-frills tool. The interface is bare-bones, but it gets the job done. It does not ask for a card, and there is no account required for single-image work. If you only have one or two images to process, this is perfectly fine. If you need to process many files at once, you will hit the batch limit quickly, so use one of the tools higher up the list instead.
ReSizer.AI
ReSizer.AI supports PNG, JPG, WebP, and AVIF, and lets you compress, resize, and convert images. The page says it is free, with no signup, and that it is "completely free and always will be." It does not mention a credit card, and there is no watermark. The tool is straightforward: upload, choose your settings, and download. It works in any browser. The main limitation is that it is a smaller service, so it may not have the same speed or reliability as the bigger names on this list. But for a quick resize or conversion, it is perfectly serviceable. If the others are down or you want a simple interface, this is a fine backup.
How to Choose Between Them
Start with TinyPNG if you have standard JPEG or PNG files under 5 MB and you want the best quality-to-size ratio with zero fuss. Use Adobe Express if your files are larger than 5 MB or you need to resize to exact dimensions. Switch to Squoosh if you want full control over compression settings or need to convert to AVIF. Use ImageCompressify if you need a rare format or want to target a specific file size. Convert, upscale, or remove backgrounds with img.now. MiniPx and ReSizer.AI are fine for occasional single-image jobs, but they do not offer anything the top three do not already do better.
If you are converting a HEIC file (from an iPhone) to JPEG or PNG, use a fast HEIC converter first, because it is the fastest free way to handle that specific format. If you need to convert a JPG to PNG or vice versa, convert JPG to PNG with a quick, no-account option. For general image editing beyond compression, like cropping, adding text, or adjusting colors, you should use a proper editor like GIMP or Inkscape (for vector graphics), which are free, open-source, and run on your computer. But for a quick resize or compress, the browser tools above are faster.
One more thing: if you are working with a lot of images and want to do batch processing without uploading, you can use ImageMagick from the command line. It is free, open-source, and incredibly powerful, but it requires some comfort with typing commands. For most people, the browser tools on this page are easier and just as effective.
Frequently Asked Questions
Do I need to create an account to use these tools?
No. TinyPNG, Squoosh, ImageCompressify, MiniPx, and ReSizer.AI all explicitly state that no account or sign-up is required. Adobe Express does not state whether an account is needed, but the basic resize and compress functions work without signing in. None of these tools require a credit card.
Can I use these tools on my phone or tablet?
Yes. All of these tools work in any modern mobile browser. The interfaces are responsive, and you can upload images from your camera roll or files app. Squoosh is particularly good on mobile because it processes images locally on your device, so you do not need a fast internet connection.
What is the maximum file size I can upload?
TinyPNG allows up to 5 MB per image. Adobe Express allows up to 40 MB. The others do not state a specific limit on their free pages, but they are designed for typical web images, so files over 20 MB may be slow or fail. If you have a very large image, resize it first with Adobe Express or use a desktop tool like GIMP.
Are these tools really free, or are there hidden costs?
They are genuinely free for the features described. TinyPNG, Squoosh, ImageCompressify, MiniPx, and ReSizer.AI all state that their free tiers are permanent and do not require payment. Adobe Express offers a free tier with these specific tools, though it also has a paid subscription for advanced features. None of them add watermarks to your images.
Which tool should I use to convert a HEIC file to JPEG?
Use heic.now for that specific conversion. It is free, requires no account, and handles HEIC files quickly. For other conversions, like PNG to WebP, use Squoosh or TinyPNG, as they give you more control over the output quality.
The guides in this section
Each one takes a single question from the list above and answers it properly.
- How to Convert HEIC to JPG Free
- How to Convert PNG to JPG (and When You Should Not)
- How to Compress an Image Without Ruining It
- How to Convert an Image to SVG
This section is one part of Where to Convert Files Online Free: Images, Documents, Audio and Video.
