ConvertorLab

Image Compressor

Compress images online in your browser. Add JPG, PNG, WebP, HEIC, GIF, BMP, SVG, or PDF image files, choose quality and resize settings, then download optimized results one by one or as a ZIP.

Import and settings

Add image files, choose compression settings, then process the batch.

Drag and drop images here or

Supports JPG, JPEG, PNG, WebP, GIF, BMP, SVG, HEIC, and PDF. Limits: max 200 files - max 1 GB total.

Modes adjust quality and resize only. For PNG graphics, choose WebP or JPG output when you need real size reduction. For HEIC, the browser decodes locally and exports as JPG, WebP, or PNG.

Files and downloads

No files selected.

Open one compressed result before replacing your original. Some files are already optimized, so keeping the original can be the best output.

Good for

  • Reducing image file size for upload forms, email attachments, websites, marketplaces, school portals, and client delivery.
  • Compressing JPG, JPEG, PNG, WebP, HEIC, GIF, BMP, SVG, and PDF image workflows from one focused browser workspace.
  • Testing a balanced quality setting first, then using stronger compression or resize presets only when a file is still too large.
CompressCompress JPGReduce JPG and JPEG photo size for uploads, email, and websites.Open toolCompressCompress PNGShrink PNG screenshots and graphics while keeping useful quality.Open toolCompressCompress WebPOptimize WebP files for faster pages and lighter downloads.Open toolImageResize ImageSet image dimensions before compression when size limits are strict.Open tool

Privacy note: this image compressor is designed for browser-side processing where supported. Keep an untouched copy of important originals and review compressed files before sharing.

What is an image compressor?

An image compressor reduces the file size of a picture so it is easier to upload, email, publish, or store. A photo, screenshot, product image, profile picture, or web graphic can be too large because of its dimensions, format, quality level, or hidden file structure. This free image compressor online helps with common image compression tasks such as compress JPG, compress PNG, compress WebP, reduce image size, make image file smaller, and compress photos for upload without installing desktop software. The best result is not always the smallest possible file; the best result is the smallest version that still looks clear enough for its destination.

Example image compression workflow

If a website, email app, document portal, or marketplace says an image is too large, compress a copy first and check the output before replacing the original.

InputImages from your device
Best first settingBalanced mode with original format
Stricter limitResize long side or export JPG/WebP
DownloadIndividual optimized files or one ZIP

This example is about practical file preparation. When exact dimensions are required, resize first, then compress the resized copy.

Common use cases

  • Compress images for upload when a form rejects a large JPG, PNG, or WebP file.
  • Reduce photo size for email while keeping faces, products, and important details readable.
  • Prepare website images so pages load faster without using oversized originals.
  • Compress screenshots, product photos, profile images, social graphics, and client files before sharing.
  • Batch compress images and download the finished files as one ZIP archive.

Popular image compression tasks

  • Use an image compressor online when you need to reduce image size quickly without installing software.
  • Compress JPG online for email, job applications, profile photos, listings, and upload forms.
  • Compress PNG images when screenshots or transparent graphics are too large.
  • Compress WebP files for lighter website assets and faster page delivery.
  • Convert heavy PNG or BMP files to JPG or WebP when the destination does not require transparency.
  • Resize and compress images when both dimensions and file size must fit a strict portal requirement.

Features

  • Batch import for everyday image sets.
  • Quality presets for softer or stronger compression.
  • Output choices for keeping format or forcing JPG, WebP, or PNG.
  • Resize presets for reducing oversized dimensions.
  • Individual downloads and ZIP export.

How to use Image Compressor

  1. Add files. Drag images into the import panel or choose files from your device.
  2. Choose settings. Start with balanced mode, then adjust output, quality, or resize only if needed.
  3. Compress. Run the batch and keep the tab open while progress updates.
  4. Review and download. Download one result or export all optimized files as a ZIP.

Benefits

  • Reduce upload errors caused by oversized images.
  • Keep compression decisions visible in one workspace.
  • Avoid making already optimized files larger where possible.
  • Move to focused JPG, PNG, WebP, resize, or converter tools when a specific workflow needs more control.

How to choose the best output

Keep the original format when you only need a gentle JPG or WebP compression pass. Choose JPG for normal photos when the destination wants broad compatibility and transparency is not needed. Choose WebP for website images when smaller file size and modern browser support matter. Choose PNG only when transparency or crisp graphic edges are more important than the smallest possible file. If a PNG screenshot or transparent graphic is too large, WebP can often reduce size better than another PNG export, but always check the result in the place where it will be used.

Related guides

Compress JPG guide coverCompress JPG guideReduce JPG photo size for forms, email, websites, and everyday uploads.Read guideCompress PNG guide coverCompress PNG guideMake screenshots and transparent graphics lighter without losing the reason PNG was chosen.Read guideWebsite image performance guide coverWebsite image performancePrepare images that look good while keeping pages fast and easier to publish.Read guide

Image compressor FAQs

What does an image compressor do?

An image compressor reduces image file size by changing quality, format, dimensions, or file structure so the image is easier to upload, email, publish, or store.

Is this a free image compressor online?

Yes. You can add image files in the browser, choose compression settings, and download optimized results without creating an account.

Which formats can I compress?

The tool accepts common image formats such as JPG, JPEG, PNG, WebP, GIF, BMP, SVG, HEIC, and supported PDF image workflows. Output options depend on browser support and selected settings.

Can I batch compress images?

Yes. Add multiple files, compress the batch, then download individual optimized files or one ZIP archive.

Should I keep the original format?

Keep original format for simple JPG or WebP photo compression. Choose JPG or WebP output when a PNG, GIF, BMP, or SVG file needs real size reduction for upload or web use.

What quality setting should I use?

Start with the balanced preset. Use a higher quality setting for faces, products, screenshots, or text, and a stronger setting only when a form or email system has a strict file-size limit.

Can compressing images reduce quality?

Yes. JPG and WebP compression can remove detail at stronger settings. Review at least one result before replacing important original files.

Will compressed images ever become larger?

Some images are already optimized. This tool is designed to keep the original when compression would produce a larger result in common image workflows.

Does this tool upload my files?

The compressor is designed for browser-side processing where supported. Use files you own, keep originals, and review outputs before sharing.