Compress images
Reduce image dimensions and adjust JPG or WEBP quality to prepare smaller image files.
- 1Add files
- 2Options
- 3Convert
- 4Save
Preparing the converter…
Supported formats and settings
- Input formats
- JPG, JPEG, PNG, WEBP, BMP
- Output formats
- Image
- Per-file limit
- Current device memory
- Total selected-file limit
- Estimated by file count and format
- Number of selectable files
- 1–100
Recommended input total: 16 MiB on mobile / 64 MiB on desktop. Low memory can reduce the effective limit.
Your files are not uploaded to a conversion server. A new result is created in your browser.
How to use this tool
- Choose files in JPG, JPEG, PNG, WEBP, BMP format. Maximum files per batch: 100.
- Review Output format, Output quality (%), Maximum long edge (px), then start processing.
- Download the Image result and check its content and quality.
What this tool does
- Reduce image dimensions and adjust JPG or WEBP quality to prepare smaller image files.
- Read JPG, JPEG, PNG, WEBP, BMP input and save the Image result as a new file.
- Available settings: Output format, Output quality (%), Maximum long edge (px).
Limitations
- File-size reduction depends on the original. PNG ignores the lossy quality slider.
Frequently asked questions
Compress images — What should I check before using this tool?
File-size reduction depends on the original. PNG ignores the lossy quality slider.
Which files can I choose?
Choose files in JPG, JPEG, PNG, WEBP, BMP format. Maximum files per batch: 100.
How can I adjust the result?
Output format, Output quality (%), Maximum long edge (px).
Understand the formats
JPG / JPEG
JPEG stores raster photographs with lossy compression. JPG and JPEG are two extensions for the same format.
Choose JPG for photographic images when a receiving app needs a widely supported format. Inspect fine text and edges after reducing quality.
JPG does not store transparent pixels. A PNG-to-JPG conversion must fill the background. Saving an existing JPG as PNG cannot restore detail already lost in the JPG.
PNG
PNG stores raster images with lossless compression and supports an alpha channel for transparency.
Use PNG for screenshots, diagrams and interface graphics. Check the pixel dimensions before placing it in a print document.
A PNG file can be larger than a JPG of a photograph. Browser processing can change metadata and color profiles; lossless compression does not guarantee that every source property is retained.
When is this useful?
Adjust quality and dimensions for a smaller upload. Use the size-budget tool when a specific KB limit must be met.
Input and result example
photo + quality/dimensions → smaller candidate imageExamples illustrate the workflow; actual size, support and recognition depend on the source and settings.