BeforeOriginal
Image Tools
Compress images locally.
Reduce image file size without uploading source images. Choose output format and quality, apply the same setup to the batch or edit images individually, then download successful results as files or ZIP.
Images0 images readyOne setup applies to the whole batch.
Settings behaviorChoose how settings applyStart with one shared setup, then override individual images when needed.
SettingsCompress Image
Dimensions stay unchanged.
JPEG and WebP respond most strongly to quality. PNG remains lossless.
AfterLive preview
Processing images…0 / 0
JPEG and WebP respond to the quality slider. PNG output remains lossless, so file-size reduction can vary considerably by image.
Quality-controlled local compression
Compress a batch with one output setup.
Keep image dimensions while changing output format and quality. JPEG and WebP respond strongly to the quality slider, while PNG stays lossless.
Private by design
Source images are decoded and processed locally in your browser. No image-processing API upload is required for this tool.
- Compress JPG, PNG and WebP without uploading source images.
- Choose Same as source, PNG, JPG or WebP output.
- Adjust output quality before processing.
- Use individual mode when a few images need different settings.
- Download successful batch results as a ZIP.
How to use it
How to compress images without changing their dimensions.
Compression re-encodes the visible image. Choose an output format and quality level, compare the preview, then process locally.
Add your images
Choose JPG, PNG or WebP files. The original source files stay available on your device.
Choose the output format
Use WebP or JPG for quality-controlled lossy compression, Same as source to keep the source family, or PNG when lossless output is required.
Adjust quality
Lower JPEG or WebP quality to target a smaller file. PNG remains lossless, so the quality slider does not reduce PNG quality.
Process and download
Run the batch in the browser and download a single compressed image or a ZIP when several results complete.
When to use it
Reduce image file size for websites, uploads and storage.
Compression is most useful when pixel dimensions are already correct and the goal is to reduce transfer or storage size.
Batch or individual
Use Apply to all when the same setup fits the batch. Switch to Edit individually when one image needs different settings without rebuilding the rest of the queue.
- Create lighter website images without resizing the canvas.
- Convert suitable photos to WebP for smaller delivery files.
- Use different quality levels for a few important images with individual overrides.
- Keep PNG output lossless when transparency or pixel fidelity matters more than size.
FAQ
Compress Image FAQ
Practical answers about compress image, local processing, batch behavior and output limitations.
Does image compression change the dimensions?
This tool keeps the decoded image dimensions unchanged. It changes the encoding format and/or quality settings used for the new output file.
Which format usually compresses photos well?
JPEG and WebP are usually better suited to quality-controlled photo compression. The best choice depends on compatibility, transparency needs and the visual content.
Why does PNG quality not change the file the same way?
PNG output is lossless in this workflow. Its file size depends on the image content and PNG encoding rather than a lossy quality setting.
Can I use different compression settings in one batch?
Yes. Start with shared settings, then switch to Edit individually for files that need a different format or quality.
Practical guides
Learn the workflow before you process a batch.
Use these focused guides for common sizing, compression, crop, blur or metadata questions, then return to the tool with the right settings in mind.
Related Image Tools
Continue editing without uploading your source images.
Use a related tool for the next step instead of repeating the upload-and-download workflow on a separate service.
LiveResize ImageResize by pixels, percentage, or fit-to-box with batch and individual settings.LiveCrop ImageDrag Rectangle, Square, Circle or Triangle crops with common aspect-ratio presets.LiveBulk Rename ImagesRename a batch without changing image bytes or source extensions.LiveRemove Image MetadataStrip EXIF, GPS and software metadata locally.