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Image Compressor

Shrink PNG, JPG, and WebP files directly in your browser. Upload one image or a batch, set compression quality and a max long edge, then download compressed files individually or as a ZIP. Your images stay on your device. Free to use with no account or card needed.

Drop PNG, JPG, or WebP images here

Bulk upload supported. Export individually or as a ZIP. Processed locally in your browser

  • Free to use
  • No account required
  • Files stay in your browser
  • PNG, JPG, and WebP support
  • Bulk export + ZIP

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Frequently asked questions

How do I compress an image online?
Upload one or more PNG, JPG, or WebP files, choose compression quality and a max long edge, then click Compress images. When processing finishes, download each file individually or use Download All to get a ZIP archive.
Is this image compressor free?
Yes. This tool is completely free with no account, card, watermark, or software install required.
Are my images uploaded to a server?
No. Compression runs locally in your browser using the Canvas API. Your source files and compressed downloads are not sent to Vidsembly or any third-party server.
Which image formats can I compress?
You can compress PNG, JPG (JPEG), and WebP files. Each output keeps the same format as the original file, with a -compressed suffix added to the filename.
Why set a max long edge?
Many large photos and screenshots are wider or taller than a web page needs. Limiting the longest side to 2560px, 1920px, or 1280px often cuts file size dramatically while keeping text and faces readable on laptops and phones.
Does compression affect PNG transparency?
PNG files keep an alpha channel when you compress them here. For the biggest savings on flat graphics, consider exporting a WebP or JPG copy with the WebP to JPG or WebP to PNG converters when transparency is not required.
Can I compress multiple images at once?
Yes. Add several files before compressing, apply one quality and size setting to the batch, then download finished files individually or package them together as a ZIP.

About this tool

When to compress images before upload

CMS heroes, course thumbnails, email headers, and marketplace listings often enforce megabyte caps or slow down on cellular connections. Compressing images before upload keeps pages fast, avoids rejected attachments, and reduces storage churn in shared drives.

Quality vs. file size for JPG and WebP

Lossy formats trade fine detail for smaller downloads. A quality setting around 80% to 85% is a practical starting point for blog photos and social previews. Lower quality only when a portal shows a hard limit or when the image is a small thumbnail.

Resize large photos, not just re-encode them

A 6000px camera export may be overkill for a 1200px content column. Combining a max long edge with sensible JPEG or WebP quality usually beats re-saving the same pixel dimensions at a slightly lower quality slider.

PNG screenshots and UI assets

PNG is lossless, so browsers cannot shrink it as aggressively as JPEG. For UI captures with transparency, resizing the canvas often helps more than quality tweaks. When you do not need transparency, converting WebP exports to JPG can produce smaller handoffs for stakeholders.

Private browser-based compression

Client decks, unreleased product shots, and internal screenshots can be sensitive. This compressor runs in your browser so you can prepare web-ready files without routing them through an unknown upload queue.

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