Resize. Compress. Crop. For free.

Using TinyPixel is simple. Click the drop zone or drag your images onto the page. Set your desired output width, height, format (JPEG, PNG, WebP, or AVIF), and quality level in the Global Settings panel. Click "Process All" to compress and resize all images at once. Then download them individually or as a ZIP. No sign-up or upload to any server — everything runs in your browser.

In TinyPixel, enable "KB target" mode in the settings panel and type your desired file size in kilobytes — for example 200 KB. The tool automatically adjusts quality to produce the smallest file that fits within your target. This works for JPEG, PNG, WebP, and AVIF. It is the most accurate free image reducer to KB online.

Open TinyPixel, drop your image, and switch to "KB target" mode. Enter 20 in the KB field and click Process. The engine will binary-search the optimal quality level to produce a file as close to 20 KB as possible without exceeding it. If the image is very large or high resolution, also set a max width (e.g. 800 px) to help reach the target.

Drop your image into TinyPixel, enable "KB target" mode, and type 100. Hit Process. The tool finds the right quality setting automatically — no manual trial and error. For photos where 100 KB is tight, switching the output format to WebP will give you much better quality at the same file size compared to JPEG.

Set the KB target to 50 in TinyPixel and click Process. If the result looks too compressed, reduce the image dimensions first (e.g. set max width to 600 px) so the compressor has less pixel data to work with. WebP and AVIF output formats reach 50 KB at noticeably higher quality than JPEG.

Drop your image into TinyPixel and enter the desired width and/or height in the Dimensions fields. Use "Fit" mode to scale proportionally within the bounds, "Fill" to cover the exact dimensions, or "Stretch" to ignore aspect ratio. Lock the aspect ratio toggle to keep proportions when editing only one dimension. Click Process to apply.

Yes — TinyPixel is completely free with no limits, no account, and no watermarks. Resize, compress, and crop JPEG, PNG, WebP, and AVIF images in your browser. Batch process hundreds of files at once and download as a ZIP. It is one of the best free online image resizer tools available in 2026.

TinyPixel currently works in pixels and percentages. To convert centimeters to pixels, multiply by your target DPI — for 96 DPI (screen), 1 cm ≈ 38 px; for 300 DPI (print), 1 cm ≈ 118 px. Enter the calculated pixel values in the Width and Height fields. Print-ready cm-based resizing with DPI control is on the roadmap.

Enter a width or height larger than the original in the Dimensions fields and click Process. TinyPixel will upscale the image using canvas interpolation. For best results when upscaling, use PNG output to avoid compression artifacts. Note that upscaling cannot add detail that was not in the original — for AI-based upscaling with sharpness recovery, a dedicated upscaler tool is recommended.

The best way to reduce file size with minimal quality loss is to switch the output format to WebP or AVIF — these modern codecs produce files 30–50% smaller than JPEG at the same visual quality. In TinyPixel, set format to WebP and quality to 85–90%. For images with transparency, use WebP instead of PNG. You can also strip EXIF metadata to shave extra kilobytes from JPEGs without any visual change.

Most form uploads require images under a specific size limit — commonly 200 KB, 500 KB, or 1 MB. In TinyPixel, enable "KB target" mode and enter the form's limit. The tool automatically finds the best quality setting to fit. If the form also has dimension requirements (e.g. max 1000 px wide), set those in the Dimensions fields first. Process and download — ready to submit.