Best Free Online Image Compression Tools (2026)

Best Free Online Image Compression Tools (2026)

In today’s digital world, images are a crucial part of websites, blogs, e-commerce platforms, and social media. However, high-resolution images can significantly slow down website performance and consume storage unnecessarily.

This is where image compression tools come into play. These tools reduce image size without compromising quality, improving website speed, saving bandwidth, and enhancing user experience.

Here’s a comprehensive list of the best free online image compression tools. We’ll cover their features, links, and ideal use cases.


1. What Is Image Compression?

Image compression reduces the size of an image without making it look blurry or broken. It removes extra data from the image to make it lighter and easier to load.

In simple words:
Compression = Smaller file size + Same quality


2. Why Image Compression Matters

Makes websites load fast

Helps improve SEO ranking

Reduces bounce rate

Saves storage space

Helps pass Google PageSpeed Insights

Improves user experience

Speeds up mobile browsing

Makes sharing easier

Fast websites perform better in search results, and image optimization is one of the biggest parts of website speed.


3. How Image Compression Helps SEO

Google cares about page speed, user experience, and mobile performance. Heavy images slow everything down.

Compressed images help your site:

Rank better in Google

Load fast on mobile

Improve Core Web Vitals

Reduce LCP issues (Largest Contentful Paint)

Improve CLS and FID scores

This makes image compression important for every website.


4. Types of Image Compression

a) Lossless Compression

Reduces size

Keeps original quality

No details lost
Good for: PNG, SVG, icons.

b) Lossy Compression

Reduces size a lot

Slight reduction in quality
Good for: JPG, WebP, large photos.

c) AI Compression

Uses machine learning

Maintains high quality

Best for modern websites


Complete List of Best Free Online Image Compression Tools

 

General Image Compression Tools

TinyPNG

TinyJPG

CompressJPEG

CompressPNG

ILoveIMG Compressor

Optimizilla

ImageCompressor.com

Kraken.io Free Web Interface

CompressNow

IMG2Go

ResizePixel Compressor

Online Image Compressor (123Apps)

Squoosh (by Google)

Compressor.io

PicResize Compressor

BeFunky Image Optimizer

EzGIF Image Optimizer

CloudConvert Image Compression

Aconvert Image Compressor

FreeConvert Image Compressor

PunyPNG

Fotor Image Compressor

RawPiexel Compressor

ReduceImages

Gzip Image Compressor

MergeImages Compressor

Simple Image Resizer Compressor

Adobe Image Compressor (Adobe Express)

Canva Image Compressor

VanceAI Image Compressor

iLovePDF Image Compressor

PDF2Go Image Compression

XConvert Image Compressor

FilesCompress (images)

IMG Online Image Compressor


AI-Based Image Compression Tools

Let’s Enhance

Topaz Photo AI (free trial)

AI Image Optimizer by Icons8

Upscale & Compress by DeepAI

Pixelcut Compressor

HitPaw Image Compressor

AI Image Optimizer by Kapwing

Neural.Love Compressor


Bulk Image Compression Tools

BulkResizePhotos

Bulk Image Compressor (ToolsPanda)

Bulk Image Optimizer (WebUtility)

FastStone Photo Resizer (free desktop)

Caesium Image Compressor

RIOT (Radical Image Optimization Tool)


WebP, AVIF, & Next-Gen Image Compression Tools

Cloudinary Free Plan

Imgix Free Tools

ShortPixel Web Compressor

WebP Converter Online

Convertio WebP Compressor

AVIF.io Compressor

WebPimage.com

WebP2PNG Compressor


Developers & WordPress Image Compression Tools

ShortPixel WordPress Plugin

Imagify Image Optimizer

Smush WP Plugin

EWWW Image Optimizer

Optimole

TinyPNG API Tool

Kraken.io API

Cloudflare Polish (free on Pro)

Jetpack Image CDN


Mobile Image Compression Apps

Photo Compress 2.0 (Android)

Lit Photo Compressor (Android)

Image Size App (iOS)

Compress Photos & Pictures (iOS)

PicTools Mobile


Image Compression for Photographers

JPEGmini (free trial)

RawTherapee

Darktable

GIMP Save for Web Plugin

Photopea Online


Special Format Compressors

SVGOMG (compress SVG)

Compressor for GIF (EZGIF)

APNG Compressor

BMP to JPG Compressor

TIFF to JPEG Compressor


Privacy-Focused Image Compressors

Squoosh (offline mode)

Compress-Or-Die Image Compressor

Local Image Optimizer (desktop)


Ultra-Simple, Fast Compressors

MiniTool Image Compressor

WooTechy Compressor

JPEG Reducing Tool (Simple Online Tool)

JPG-Compress.com

PNG-Compress.com


Dedicated Free Tools (Less Known but Useful)

CompressorZilla

Picdiet

Toolur Image Compressor

ShrinkMe Image Tool

ClipTools Image Compressor

IMGKit Compressor

CompressPanda

QuickImageOptimizer

Compressio.org

Compressor.app

CompressAndConvert


1. TinyPNG

Website: https://tinypng.com
Description: TinyPNG uses smart lossy compression techniques to reduce the file size of PNG and JPEG images. Ideal for web designers and developers who want quick and high-quality compression.
Features: Drag-and-drop interface, batch compression, API for developers.


2. Compress JPEG

Website: https://compressjpeg.com
Description: Compress JPEG files quickly while retaining image quality. Supports multiple file uploads simultaneously.
Features: Free online service, batch compression, option to download individually or as a ZIP.


3. Compress PNG

Website: https://compresspng.com
Description: Specializes in PNG image compression with minimal quality loss.
Features: Batch compression, preview feature, easy-to-use interface.


4. ImageOptim

Website: https://imageoptim.com/online
Description: Optimizes images for faster loading while maintaining quality. Works for JPEG, PNG, and GIF formats.
Features: Drag-and-drop, bulk image compression, free online version.


5. Optimizilla

Website: https://imagecompressor.com
Description: Online image optimizer that uses a smart combination of optimization and lossy compression algorithms.
Features: Compress up to 20 images at once, adjust quality manually, preview changes.


6. Kraken.io

Website: https://kraken.io/web-interface
Description: A powerful online image optimizer supporting JPEG, PNG, and GIF.
Features: Lossy and lossless compression, bulk upload, drag-and-drop, integrates with WordPress via plugin.


7. JPEG-Optimizer

Website: https://www.jpeg-optimizer.com
Description: Quickly compress JPEG images for faster uploads and web usage.
Features: Resize images, easy interface, ideal for beginners.


8. iLoveIMG

Website: https://www.iloveimg.com/compress-image
Description: Offers compression for JPEG, PNG, and GIF images, with bulk processing capabilities.
Features: Drag-and-drop, cloud integration (Google Drive & Dropbox), batch download.


9. Squoosh

Website: https://squoosh.app
Description: Open-source web app from Google that compresses images efficiently.
Features: Advanced compression options, visual comparison of original vs compressed images, supports multiple formats.


10. OptiPNG

Website: http://optipng.sourceforge.net
Description: Focused on PNG images, it reduces file sizes while keeping transparency intact.
Features: Free and open-source, command-line interface, lossless compression.


11. PNGGauntlet

Website: https://pnggauntlet.com
Description: PNGGauntlet combines PNGOUT, OptiPNG, and DeflOpt to compress PNG images without losing quality.
Features: Windows-based, batch compression, preserves transparency, lossless optimization.


12. CompressNow

Website: https://www.compressnow.com
Description: Simple online tool to compress JPG, PNG, and GIF images by choosing a percentage of compression.
Features: Adjustable compression rate, drag-and-drop, multiple file uploads.


13. Simple Image Resizer

Website: https://www.simpleimageresizer.com
Description: Focuses on resizing and compressing images for web and social media use.
Features: Resize by percentage or pixels, supports JPG, PNG, GIF, easy-to-use interface.


14. Caesium Image Compressor

Website: https://saerasoft.com/caesium/
Description: Free desktop application for lossless image compression. Ideal for photographers and designers.
Features: Batch compression, preview compression results, supports JPG, PNG, BMP, TIFF.


15. RIOT (Radical Image Optimization Tool)

Website: http://luci.criosweb.ro/riot/
Description: Lightweight image optimizer for JPEG, PNG, and GIF. Offers real-time visual compression comparison.
Features: Batch processing, color reduction, adjustment of compression parameters.


16. TinyJPG

Website: https://tinyjpg.com
Description: Specializes in compressing JPEG images quickly and efficiently while maintaining quality.
Features: Bulk uploads, smart lossy compression, WordPress plugin available.


17. JPEG.io

Website: https://www.jpeg.io
Description: Converts and compresses PNG, GIF, and BMP images to JPEG format online.
Features: Drag-and-drop interface, automatic compression, no registration required.


18. CloudConvert

Website: https://cloudconvert.com/image-compressor
Description: Powerful online image converter and compressor supporting over 200 formats.
Features: Adjustable compression levels, cloud storage integration, batch processing.


19. Online Image Optimizer

Website: https://www.imageoptimizer.net
Description: Free online tool for compressing JPEG and PNG images without significant quality loss.
Features: Adjustable quality, resize images, simple web interface.


20. WebResizer

Website: http://webresizer.com/resizer/
Description: Allows resizing and compressing images for web usage quickly.
Features: Crop, resize, adjust image quality, preview compressed images.


21. Optimizilla

Website: https://imagecompressor.com
Description: Online tool that compresses JPEG and PNG images to the minimum possible size while preserving quality.
Features: Batch compression, adjustable quality, preview before download.


22. Kraken.io

Website: https://kraken.io/web-interface
Description: Web-based image optimizer offering lossless and lossy compression for JPEG, PNG, and animated GIFs.
Features: API integration, bulk uploads, cloud storage support.


23. ImageRecycle

Website: https://www.imagerecycle.com
Description: Compresses images and PDFs for faster web loading, maintaining high visual quality.
Features: WordPress and Joomla plugins, bulk compression, dashboard analytics.


24. JPEG-Optimizer

Website: https://www.jpeg-optimizer.com
Description: Free tool for compressing JPEG images and resizing them for web use.
Features: Set compression level, resize images, simple drag-and-drop interface.


25. ShortPixel

Website: https://shortpixel.com
Description: Cloud-based image optimization tool that compresses images and improves website speed.
Features: Lossy and lossless compression, WordPress plugin, automatic optimization.


26. OptiPNG

Website: http://optipng.sourceforge.net/
Description: Open-source PNG optimizer that reduces file size without quality loss.
Features: Command-line tool, batch processing, supports Windows, Linux, Mac.


27. PNGQuant

Website: https://pngquant.org/
Description: Command-line utility for lossy compression of PNG images with high-quality results.
Features: Reduces file size up to 70%, preserves transparency, open-source.


28. RIOT Online Version

Website: https://riot-optimizer.com
Description: Web-based version of RIOT tool for optimizing JPEG, PNG, and GIF images online.
Features: Real-time comparison, batch processing, color adjustment.


29. Compress JPEG

Website: https://compressjpeg.com
Description: Free online tool dedicated to compressing JPEG images without quality loss.
Features: Batch compression, drag-and-drop interface, download individually or as ZIP.


30. Compress PNG

Website: https://compresspng.com
Description: Dedicated PNG image compression tool online that reduces file size while keeping transparency.
Features: Drag-and-drop support, batch processing, free to use.


31. TinyJPG

Website: https://tinyjpg.com
Description: Popular online tool for compressing JPEG images efficiently while maintaining high quality.
Features: Drag-and-drop upload, batch compression, WordPress plugin available.


32. TinyPNG

Website: https://tinypng.com
Description: Compresses PNG images online using smart lossy compression techniques.
Features: Preserves transparency, supports batch uploads, plugin integrations.


33. CompressNow

Website: https://www.compressnow.com
Description: Free online tool to compress JPEG, PNG, and GIF images in a few clicks.
Features: Adjustable compression level, simple drag-and-drop interface, no registration required.


34. iloveimg

Website: https://www.iloveimg.com/compress-image
Description: Free online tool for compressing images while preserving quality.
Features: Supports JPEG, PNG, GIF; batch compression; cloud storage integration.


35. JPEG-Reducer

Website: https://www.jpeg-reducer.com
Description: Compress JPEG images to reduce file size for faster web performance.
Features: Adjustable compression, preview before download, simple interface.


36. ImageOptim (Web Version)

Website: https://imageoptim.com/online
Description: Online version of the famous Mac app for optimizing images and reducing file size.
Features: Lossless compression, supports PNG, JPEG, and GIF, preserves metadata.


37. Bulk Resize Photos

Website: https://bulkresizephotos.com
Description: Online tool for batch resizing and compressing images quickly.
Features: Resize by percentage or exact dimensions, batch compress, drag-and-drop support.


38. OptiMole

Website: https://optimole.com
Description: Cloud-based image optimization tool for website performance improvement.
Features: Automatic compression, lazy loading, responsive images, CDN integration.


39. ResizePixel

Website: https://www.resizepixel.com/compress-image
Description: Free online image compressor for JPEG and PNG images.
Features: Resize and compress images, adjust quality, download individually or in bulk.


40. Simple Image Resizer

Website: https://www.simpleimageresizer.com
Description: Tool to compress and resize images for web or email use.
Features: Batch compression, drag-and-drop interface, no sign-up required.


41. Picdiet

Website: https://www.picdiet.com
Description:
Picdiet compresses images directly in your browser using client-side JavaScript. It guarantees privacy because no files are uploaded to any server. It offers up to 90% size reduction while keeping the quality visually close to the original.


42. TinyPNG API (Web Interface)

Website: https://tinify.com
Description:
This is the official compression page behind the TinyPNG/TinyJPG API. Users can upload PNG and JPG files for high-quality lossy compression. Renowned for its ability to maintain clarity while drastically reducing file size.


43. WeCompress

Website: https://www.wecompress.com
Description:
A simple online tool for compressing images (JPG, PNG, TIFF) with fast drag-and-drop functionality. Designed to reduce file size without altering image dimensions.


44. ImageOptim (Web Version)

Website: https://imageoptim.com/online
Description:
The online version of the popular Mac app. It removes unnecessary metadata and compresses PNG, JPG, and GIF files using advanced optimization engines like MozJPEG.


45. PS2PDF Image Compressor

Website: https://www.ps2pdf.com/compress-image
Description:
Supports bulk compression for JPG, PNG, and WEBP with adjustable quality settings. Offers both lossy and lossless modes, ideal for large images.


46. AConvert Image Compress

Website: https://www.aconvert.com/image/compress
Description:
AConvert provides easy quality-based compression for multiple image formats. Users can choose custom output quality for precise file-size control.


47. Compressor.io (New Version)

Website: https://compressor.io
Description:
Rebuilt with modern technology to support both lossy and lossless compression. Works for JPG, PNG, SVG, and GIF. Delivers strong results with user-friendly interface.


48. Optimizilla Pro (Online)

Website: https://imagecompressor.com/
Description:
An improved version of Optimizilla that allows drag-and-drop compression, image resizing, and quality sliders. Offers batch processing for up to 20 images.


49. IMG2Go Image Compressor

Website: https://www.img2go.com/compress-image
Description:
A multi-format online compressor supporting JPG, PNG, SVG, WEBP, and GIF. Lets users pick target quality, output format, and even resize while compressing.


50. PhotoAid Image Compressor

Website: https://www.photoaid.com/tools/image-compressor
Description:
A new but highly efficient online compressor specialized in keeping photo clarity. Ideal for website owners and bloggers who need quality-preserved compression.


51. ImageSmaller

Website: https://www.imagesmaller.com
Description: A simple online compressor designed specifically for JPG and PNG images. It maintains good quality while reducing file size significantly. No signup and minimal interface.


52. CompressYourImage

Website: https://www.compressyourimage.com
Description: Lets you adjust image quality using a slider and compresses JPEG, PNG, GIF, and TIFF formats. Also offers resizing before compression.


53. Fotoforensics (Metadata Cleaner & Compression)

Website: https://fotoforensics.com
Description: Although mainly known for metadata analysis, it also allows you to re-save images with reduced size. Useful for removing EXIF + compression in one go.


54. Picdiet

Website: https://www.picdiet.com
Description: Fast, JavaScript-based tool that compresses images locally in your browser for privacy. Offers up to 90% size reduction for JPG images.


55. TinyJPG.to (Unofficial clone)

Website: https://tinyjpg.to
Description: A working alternative version of the TinyJPG/TinyPNG platform offering JPG compression with simple drag-and-drop functionality.


56. ImageResize.org Compressor

Website: https://imageresize.org/compress-image
Description: Provides compression + resizing + format conversion. Lets you choose compression level and preview final quality before download.


57. Online Converter – Image Compressor

Website: https://www.onlineconverter.com/compress-image
Description: Very easy to use — simply upload your image and choose desired file size. Useful for specific-size compression requirements.


58. ResizePixel Compressor

Website: https://www.resizepixel.com/compress-image
Description: Offers compression, resizing, cropping, and converting. Clean UI and supports major formats including JPG, PNG, GIF, and BMP.


59. Birme: Batch Image Resizer & Compressor

Website: https://www.birme.net
Description: Designed for batch image editing. You can resize and compress multiple images at once. Great for photographers and bloggers.


60. Kraken Image Optimizer (Free Web Interface)

Website: https://kraken.io/web-interface
Description: A professional-grade optimization tool. The free browser version allows lossless and intelligent lossy compression for JPG, PNG, and GIF.


61. Social Image Compressor

Description: Tool created to compress images specifically for social media platforms, keeping dimensions and quality optimized for Facebook, Instagram, Twitter, and more.
Link: https://socialimagecompressor.com


62. PunyPNG

Description: A long-running optimizer for PNG, JPG, and GIF images using lossless techniques. Ideal for developers and designers.
Link: https://www.punypng.com


63. TinyPNG Photoshop Plugin

Description: The TinyPNG/TinyJPG engine embedded directly into Photoshop. Compresses images while exporting.
Link: https://tinypng.com/photoshop


64. Compressor.io (Legacy Version)

Description: Older version of Compressor.io still available online, offering strong compression with minimal quality loss.
Link: https://compressor.io/legacy


65. Optimizilla

Description: High-ratio optimizer using smart combination of lossy and lossless algorithms.
Link: https://imagecompressor.com


66. Website Planet Image Compressor

Description: Free tool allowing batch image compression with automatic processing on upload.
Link: https://www.websiteplanet.com/webtools/imagecompressor/


67. Cloudinary Image Compression Tool

Description: Cloud-based image and media optimization engine that compresses on-the-fly via URL parameters.
Link: https://cloudinary.com


68. FreeConvert Image Compressor

Description: Online compressor for JPG, PNG, GIF, and WEBP with adjustable compression levels.
Link: https://www.freeconvert.com/image-compressor


69. JPEGMini Online

Description: Smart JPEG reduction tool that maintains extremely high quality even at large compressions.
Link: https://www.jpegmini.com


70. HiPDF Image Compressor

Description: Part of the HiPDF suite, offering simple and quick multi-format image compression.
Link: https://www.hipdf.com/compress-image


71. FreeConvert – Online Image Compressor

Website: FreeConvert
Description: Compress image files by up to 80% while retaining quality. Supports JPG, PNG, GIF formats. FreeConvert
Use Case: Great for users who want drag-and-drop, multiple format support, and free conversions.


72. ShortPixel – Free Online Image Compression & WebP/AVIF Converter

Website: ShortPixel
Description: Free online optimizer for JPG, PNG, animated GIF images. Also supports WebP/AVIF formats. shortpixel.com
Use Case: Ideal for websites wanting advanced format support (WebP/AVIF) and high compression.


73. iLoveIMG – Compress IMAGE

Website: iLoveIMG
Description: Choose multiple JPG, PNG, or GIF images and compress them in seconds for free. iLoveIMG
Use Case: Good for bulk image compression with an easy interface and cloud integration.


74. ImageResizer.com – Image Compressor

Website: ImageResizer
Description: Compress your image files by up to 80%, supporting JPEG and PNG formats. Image Resizer
Use Case: Useful for resizing + compressing images for websites or social media.


75. Compress2Go – Compress Image

Website: Compress2Go
Description: Reduce image file size online without software installation; supports JPG/PNG/GIF. Online File Compressor
Use Case: Good for quick compression tasks with minimal setup.


76. Tinypng / TinyPNG – Compress AVIF, WebP, PNG and JPEG images

Website: TinyPNG
Description: Free online image optimizer for faster websites. Supports AVIF, WebP, JPEG and PNG. tinypng.com
Use Case: Especially useful for website owners who want to optimize image formats for performance.


77. ImageCompressor.com – Online Image Compressor

Website: ImageCompressor.com
Description: Upload up to 20 images at once; use slider to control compression level and compare before/after. Optimizilla
Use Case: Handy for users wanting visual comparison between original and compressed images.


78. CompressJPEG.com – Compress JPEG Images Online

Website: CompressJPEG
Description: Free online tool that lets you compress JPEG images efficiently for web use.
Use Case: Ideal for photographers or webmasters who work mostly with JPEG format.


79. CompressPNG.com – PNG Compression Online

Website: CompressPNG
Description: Dedicated tool for PNG image compression while maintaining transparency.
Use Case: Perfect for websites using transparent PNG graphics and icons.


80. JPEG-Optimizer.com – JPEG Image File Reduce & Compress

Website: JPEG-Optimizer
Description: Free online tool for bulk JPEG compression and resizing for faster web loading.
Use Case: Great for beginners who need simple interface to compress JPEGs.


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