Image resizer
Resize up to 10 images locally and download one ZIP. Set pixel dimensions, keep aspect ratio and review each result. No image uploads.
Image toolsImage compressor
Compress images locally, compare actual file sizes and export JPEG or WebP. Process up to 10 images and download a ZIP without uploading files.
Ready when you are.
◎ No uploads. Your input stays here.↗ Free to use. No account needed.⌘ / Ctrl + Enter to run
A worked example
Savings depend on the original file. The result can be larger; compare the displayed byte sizes.
Input / settings
A JPEG photograph Output: WebP; quality: 80
Expected result
A WebP at the original pixel dimensions, with measured input/output bytes.
A LITTLE GUIDANCE
How to use Image compressor
Choose one or more images, select JPEG or WebP and set quality. Select Compress image, compare each output’s bytes and decoded preview, then download one image or the batch ZIP.
Good to know
Choose up to 10 files / 30 MB combined; each file must be PNG, JPEG or WebP, at most 20 MB and 40 megapixels. Processing stays in your browser. Animation and original metadata are not preserved. Keep your originals.
A few quick answers.
Why can the output be larger?
An already optimized source can grow when re-encoded. Compare the displayed byte sizes, reduce quality, or switch WebP/JPEG. No fixed percentage reduction is guaranteed.
Is my input sent to a server?
No. This tool processes your input in your browser. We don't store your text, files or results. Standard website access logs are separate; read our privacy notes.
Can I use it for free?
Yes. No account, subscription or usage credits are required.
How do I keep my result?
Use Copy or Download after running the tool. Inputs are not saved automatically and disappear when you leave or refresh the page.
Image workflow and quality guide
Compare quality, not just a percentage
Quality 80 is an encoder setting, not a promise to retain 80% of the original quality or reduce size by 80%. Try a lower setting and inspect edges, small text and smooth gradients. The preview shows decoded exported bytes, so it can reveal lossy artifacts.
A larger result is a valid outcome
An already optimized image can grow after re-encoding. The report shows actual input and output bytes and labels the result smaller or larger. Dimensions do not change. To reduce dimensions as well, use the resizer first and then choose that downloaded image here.
No guaranteed target in KB
This tool does not automatically hit 100 KB or any other target size. Change quality or format, rerun, and compare the actual bytes. JPEG flattens transparency onto white; WebP can retain it. Metadata and animation are not preserved.
Batch results and ZIP contents
The same settings apply to every selected image. Review each result: a batch may contain both successful and failed files. The ZIP includes successful images and results.txt with the report; it does not silently include failed originals. Batch output is bounded to 100 MB. If a limit is reached, use smaller batches. ZIP packaging does not add image-quality loss.
Choose your next step: resize dimensions, change image format, compare compression or rotate and mirror. Download the result before opening it in another tool.
Something not right? Report a problem with this tool. Include the steps, but never passwords or private input.
Keep your flow going.
More image tools ↗Image converter
Convert up to 10 PNG, JPEG or WebP images locally and download a ZIP. Review transparency, quality and actual output size before downloading.
Image toolsImage rotate & flip
Rotate PNG, JPEG or WebP images clockwise and mirror horizontally in your browser. Export one PNG or process up to 10 images into a ZIP.
Image tools