JPG Compressor
Compress JPG images online by tuning visual quality and maximum pixel dimensions. Batch reduce photo file sizes quickly and securely inside your web browser.
JPG, PNG, WebP · up to 50 files
Quality
Longest side
Format
Tips
- Setting the quality factor to 0.75 halves typical file size with virtually no noticeable visual degradation.
- Limiting the longest edge to 1600 pixels provides the largest single reduction in file weight for web display.
- Avoid recompressing an already compressed JPG because every encoding pass permanently discards pixel data.
How to use it
- 1 Select or drag and drop your JPG images into the compression area.
- 2 Set the desired compression quality level and optional maximum edge pixel limit.
- 3 Preview the estimated output file size and compression ratio across your batch.
- 4 Download the compressed JPG files individually or together as an archive.
What you should know
Digital cameras and smartphones produce JPEG files measuring several megabytes, which slows website loading speeds, increases bandwidth bills, and exceeds upload limits on e-commerce platforms. JPEG relies on lossy discrete cosine transform compression to discard high-frequency chrominance and luminance data that human eyes rarely register. While the format lacks transparency and animation capabilities, its universal 24-bit colour depth and broad browser compatibility make it standard across the web. Adjusting the quality slider alters quantization matrices, letting you cut file weight by 60 to 80 percent while retaining sharp edges and natural tones for standard displays.
This browser-based tool recompresses single or multiple JPEG images simultaneously by applying your chosen quality rating and maximum edge dimension. Downscaling oversized images alongside quantization reduction yields optimal file sizes for online stores like Shopify or Trendyol, the largest marketplace in Turkey. Because all processing executes locally via standard browser canvas rendering APIs, your original files never travel across the network. Note that recompression strips non-essential EXIF metadata, replaces transparent areas with white backgrounds if converting from other sources, and cannot restore details discarded in previous lossy compression passes.
Frequently asked questions
Does compressing a JPG image reduce its visual quality?
JPEG uses lossy compression, so lowering the quality level discards subtle color nuances. However, values between 0.75 and 0.85 preserve crisp details while reducing file size by more than half.
Can I compress transparent PNG images into JPG without issues?
Yes, but the JPEG specification does not support alpha channel transparency. Any transparent background areas will automatically be rendered as solid white in the resulting JPEG image.
Are my photos uploaded to an external server during compression?
No, the compression process happens entirely within your web browser using HTML5 Canvas rendering. Your images are never transmitted over the internet or saved on external servers.
Guides
Articles and format references related to this tool.
Related tools
- PNG to JPG Converter Convert PNG images to JPG format directly in your browser with optimized 0.85 quality compression. Save storage space while your files stay fully private.
- Image Compressor Compress JPG, PNG, and WebP images by adjusting quality and max edge size. Reduce file sizes in bulk right inside your browser without uploading any data.
- Bulk Image Resizer Batch resize product photos and web images to exact pixel dimensions. Lock aspect ratios and export to JPG, PNG, or WebP completely within your browser.
- EXIF Data Viewer Inspect EXIF metadata from your photos instantly. View camera models, shutter speeds, ISO, and GPS location coordinates directly inside your web browser.
- EXIF Data Remover Remove GPS coordinates, camera details, and timestamps from photos before sharing them online. Clean image metadata locally in your browser without uploads.