Smaller Files and the Right Format
Large images slow down websites, bounce off email size limits, and waste storage. The wrong format can stop a file from opening or uploading at all. AdFlex offers two free, browser-based tools that solve both problems: the Image Compressor shrinks file size, and the Image Converter changes the format. Both run entirely on your device, so your images are never uploaded.
This guide focuses on the compression flow step by step, then explains how converting works so you can choose the right tool for the job.
Step 1: Open the Image Compressor
Go to the Image Compressor. It handles JPEG, PNG, and WebP images. You can add up to 10 files at once, with each file up to 20MB. Because compression happens locally in your browser, there is no waiting for uploads and nothing leaves your computer.
Step 2: Add Your Images
Drag your images onto the page or click to browse and select them. Each image appears in a list, ready to compress. Adding several at once lets you process a whole batch in one pass instead of one file at a time.
Step 3: Set the Quality
Use the quality slider to balance file size against visual fidelity. A higher setting keeps more detail at a larger size; a lower setting produces a smaller file. PNG images are automatically converted to WebP during compression, because WebP achieves much smaller sizes while keeping quality high. You will see the savings for each file as well as the total savings across the batch, so you know exactly how much smaller everything got.
Step 4: Download Your Compressed Images
When you are happy with the results, download your images. If you compressed a batch, you can download them all together as a single ZIP file, which keeps everything tidy.
Converting Between Formats
Sometimes the issue is not size but format. The Image Converter accepts eight input formats, including GIF, SVG, AVIF, BMP, and ICO, and converts them to JPG, PNG, or WebP. To use it:
- Open the Image Converter and add your files.
- Choose your output format (JPG, PNG, or WebP).
- For WebP, you can enable a lossless option to preserve maximum quality.
- Convert, then download. Batch conversion is supported, and multiple files can be downloaded together as a ZIP.
One thing to keep in mind: JPG does not support transparency. If you convert a transparent PNG to JPG, the tool warns you, because the transparent areas will be filled with a solid background. When you need to keep transparency, choose PNG or WebP instead.
Compress or Convert: Which Do You Need?
- Compress when the image is already the right format but the file is too big for a website, email, or upload limit.
- Convert when a file will not open or upload, or when you want a more efficient modern format like WebP.
- You can do both: convert to WebP and let compression shrink it further. After this, store your finished files in your library: see Managing Your Assets.
Common Questions
How many images can I compress at once?
The Image Compressor accepts up to 10 files at a time, with each file up to 20MB. You can download the whole batch together as a ZIP.
Will compressing reduce image quality?
Compression trades a small amount of fidelity for a much smaller file. The quality slider lets you control that balance, and the tool shows the savings per file so you can stop when the quality still looks right to you.
Can I convert a transparent PNG to JPG?
You can, but JPG does not support transparency, so the transparent areas become a solid background. The converter warns you about this. To keep transparency, convert to PNG or WebP instead.
Are my files uploaded to a server?
No. Both the Image Compressor and Image Converter run 100% in your browser. Your images are processed locally on your own device and are never uploaded.
What's Next?
Explore more free utilities in QR Codes & Color Palettes, or organize your finished files in Managing Your Assets.