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Ranked by measurement

Best image compression tool

51 tested · top 51 shown

1 more could only be measured on fewer than five frames, so it is not ranked here — a partial average is not comparable with a full one.

Ordered by a seven-frame production-readiness benchmark measured from each product's public surface — not popularity, pricing or feature count. Nobody pays to appear here and the order is never edited. How it is measured →
How this field scores
low 52median 85best 99
  1. 1
    Convert Galaxy
    Free browser-based tool for converting, compressing, and resizing images.
    Perf 100
    Acce 91
    Sec 100
    Priv 100
    Rel 100
    Std 100
    Disc 100
    convertgalaxy.com · measured 2026-11-02
    7/7 frames
  2. 2
    Fernpix
    Free browser-based image tools that keep your files on your device.
    Perf 91
    Acce 100
    Sec 100
    Priv 100
    Rel 100
    Std 92
    Disc 100
    fernpix.com · measured 2026-11-07
    7/7 frames
  3. 3
    Free WebP to JPG
    Free online converter that turns WebP images into JPG files without an account.
    Perf 99
    Acce 90
    Sec 100
    Priv 100
    Rel 100
    Std 100
    Disc 100
    freewebptojpg.com · measured 2026-11-04
    7/7 frames
  4. 4
    IncreaseImages
    Free in-browser tool to increase image file size or pixel dimensions privately.
    Perf 100
    Acce 97
    Sec 100
    Priv 100
    Rel 100
    Std 92
    Disc 100
    increaseimages.org · measured 2026-11-05
    7/7 frames
  5. 5
    ImgImage
    ImgImage offers 244 free browser-based tools for compressing, resizing, converting, and editing images.
    Perf 97
    Acce 96
    Sec 80
    Priv 100
    Rel 100
    Std 100
    Disc 100
    imgimage.com · measured 2026-11-09
    7/7 frames
  6. 6
    ImgKit
    Browser-based image compressor, resizer, and converter that never uploads your files.
    Perf 100
    Acce 100
    Sec 100
    Priv 70
    Rel 100
    Std 100
    Disc 100
    imgkit.xyz · measured 2026-10-30
    7/7 frames
  7. 7
    Under1MB
    Browser-based image converter and compressor that processes files locally on your device.
    Perf 95
    Acce 100
    Sec 100
    Priv 75
    Rel 100
    Std 97
    Disc 100
    under1mb.app · measured 2026-10-30
    7/7 frames
  8. 8
    Filnixa
    Filnixa checks and fixes images that fail upload limits, entirely in your browser.
    Perf 99
    Acce 96
    Sec 65
    Priv 100
    Rel 100
    Std 100
    Disc 100
    filnixa.com · measured 2026-11-10
    7/7 frames
  9. 9
    BulkImgConvert
    Browser-based tool to compress, resize, crop, and convert images in bulk.
    Perf 99
    Acce 78
    Sec 80
    Priv 100
    Rel 100
    Std 92
    Disc 100
    bulkimgconvert.com · measured 2026-11-07
    7/7 frames
  10. 10
    Fitbyte
    Fitbyte resizes and compresses images to meet specific pixel and file-size requirements.
    Perf 100
    Acce 96
    Sec 100
    Priv 100
    Rel 92
    Std 92
    Disc 72
    fitbyte.tech · measured 2026-11-07
    7/7 frames
  11. 11
    Reduce Image Size in KB
    Tool to compress images to an exact file size range and pixel dimensions.
    Perf 60
    Acce 100
    Sec 100
    Priv 100
    Rel 100
    Std 92
    Disc 100
    imagesizeinkb.com · measured 2026-10-29
    7/7 frames
  12. 12
    CompressGIF
    CompressGIF is an online tool for compressing and reducing the file size of GIF images.
    Perf 65
    Acce 96
    Sec 80
    Priv 100
    Rel 100
    Std 100
    Disc 100
    compressgif.net · measured 2026-10-27
    7/7 frames
  13. 13
    PopEmote
    Browser-based resizer that converts images and GIFs to Twitch emote sizes.
    Perf 77
    Acce 100
    Sec 100
    Priv 75
    Rel 100
    Std 92
    Disc 100
    popemote.com · measured 2026-10-30
    7/7 frames
  14. 14
    LightPIX
    Free online image compressor for PNG, JPEG, and WebP files.
    Perf 90
    Acce 95
    Sec 100
    Priv 75
    Rel 100
    Std 92
    Disc 85
    uxbyissa.com · measured 2026-11-08
    7/7 frames
  15. 15
    LimiFile
    Browser-based tools for converting, compressing, and resizing images.
    Perf 100
    Acce 100
    Sec 45
    Priv 100
    Rel 100
    Std 92
    Disc 100
    limifile.com · measured 2026-11-07
    7/7 frames
  16. 16
    ImageResizeLab
    Browser-based image resizer, compressor, and converter that keeps files on your device.
    Perf 96
    Acce 100
    Sec 45
    Priv 100
    Rel 100
    Std 92
    Disc 100
    imageresizelab.com · measured 2026-11-05
    7/7 frames
  17. 17
    Kirkify
    Online tool to compress images to under 20KB, processed locally in your browser.
    Perf 84
    Acce 85
    Sec 80
    Priv 100
    Rel 100
    Std 89
    Disc 87
    kirkify.uk · measured 2026-10-31
    7/7 frames
  18. 18
    PicoDiet
    Browser-based image compressor that reduces file size without visible quality loss.
    Perf 100
    Acce 100
    Sec 25
    Priv 100
    Rel 100
    Std 100
    Disc 100
    picodiet.com · measured 2026-11-08
    7/7 frames
  19. 19
    Quick Image Kit
    Browser-local tools for compressing, resizing, converting, and cropping images.
    Perf 99
    Acce 95
    Sec 45
    Priv 100
    Rel 100
    Std 100
    Disc 87
    quickimagekit.com · measured 2026-11-02
    7/7 frames
  20. 20
    PIXNVO
    Free in-browser image compression tool with no uploads or accounts required.
    Perf 97
    Acce 96
    Sec 45
    Priv 75
    Rel 100
    Std 100
    Disc 100
    pixnvo.com · measured 2026-11-03
    7/7 frames
  21. 21
    SizeHex Toolkit
    Free browser-based toolkit for compressing, converting, and resizing images.
    Perf 86
    Acce 93
    Sec 45
    Priv 100
    Rel 100
    Std 92
    Disc 100
    sizehex.com · measured 2026-11-05
    7/7 frames
  22. 22
    TinyOwl
    TinyOwl is a local image compression app for Mac with reusable workflow presets.
    Perf 86
    Acce 96
    Sec 45
    Priv 100
    Rel 100
    Std 92
    Disc 100
    tinyowl.app · measured 2026-10-29
    7/7 frames
  23. 23
    CropGuide
    CropGuide is a website tool that lets users crop, resize, and edit images before upload.
    Perf 98
    Acce 80
    Sec 45
    Priv 100
    Rel 100
    Std 97
    Disc 90
    cropguide.io · measured 2026-10-31
    7/7 frames
  24. 24
    SMOGLE
    SMOGLE resizes and exports artist images for every major platform in minutes.
    Perf 89
    Acce 100
    Sec 65
    Priv 100
    Rel 100
    Std 92
    Disc 60
    smogleapp.com · measured 2026-11-07
    7/7 frames
  25. 25
    ToolHub
    ToolHub — Free online tools to convert, compress, resize, crop and rotate your images. Fast, private, and work
    Perf 74
    Acce 94
    Sec 45
    Priv 100
    Rel 100
    Std 97
    Disc 100
    trytoolhub.net · measured 2026-10-18
    7/7 frames
  26. 26
    Dryplate
    Browser-based image tools that process files locally without uploading them.
    Perf 99
    Acce 100
    Sec 80
    Priv 25
    Rel 100
    Std 92
    Disc 100
    dryplate.dev · measured 2026-11-04
    7/7 frames
  27. 27
    Convertify
    Free online image converter supporting HEIC, JPG, PNG, WebP, AVIF, and 20+ formats.
    Perf 98
    Acce 95
    Sec 55
    Priv 45
    Rel 100
    Std 92
    Disc 100
    convertifyapp.net · measured 2026-11-07
    7/7 frames
  28. 28
    ImageOpen
    Browser-based tool that converts AVIF image files to PNG without uploading them.
    Perf 93
    Acce 100
    Sec 25
    Priv 75
    Rel 92
    Std 100
    Disc 100
    aviftopng.app · measured 2026-10-28
    7/7 frames
  29. 29
    PixPrep
    Browser-based image optimization tool for bloggers, with no uploads required.
    Perf 99
    Acce 96
    Sec 25
    Priv 75
    Rel 100
    Std 92
    Disc 100
    pixprep.online · measured 2026-11-08
    7/7 frames
  30. 30
    Squishify
    Resize, crop, rename and optimize a whole batch of images right in your browser. Prep entire folders for the w
    Perf 71
    Acce 96
    Sec 45
    Priv 75
    Rel 100
    Std 100
    Disc 100
    squishify.app · measured 2026-11-02
    7/7 frames
  31. 31
    TargetKB
    TargetKB compresses images to a specific file size you set in KB or MB.
    Perf 97
    Acce 95
    Sec 25
    Priv 100
    Rel 100
    Std 85
    Disc 87
    targetkb.com · measured 2026-11-07
    7/7 frames
  32. 32
    Kiln
    Desktop app for batch converting, resizing, compressing, and renaming images.
    Perf 92
    Acce 93
    Sec 80
    Priv 25
    Rel 100
    Std 92
    Disc 100
    kilnimage.app · measured 2026-10-31
    7/7 frames
  33. 33
    PixelShrink
    Free browser-based image compressor that processes files locally on your device.
    Perf 98
    Acce 100
    Sec 25
    Priv 70
    Rel 92
    Std 94
    Disc 100
    compress-image.uk · measured 2026-11-01
    7/7 frames
  34. 34
    Pixtova
    Free browser-based image tools that process files locally with no uploads.
    Perf 98
    Acce 100
    Sec 45
    Priv 75
    Rel 100
    Std 92
    Disc 70
    pixtova.com · measured 2026-11-07
    7/7 frames
  35. 35
    Browser Image Converter
    Free, browser-based image converter that processes files locally on your device.
    Perf 66
    Acce 100
    Sec 25
    Priv 75
    Rel 100
    Std 100
    Disc 100
    browserimgconverter.com · measured 2026-10-31
    7/7 frames
  36. 36
    FlexImagePro
    Browser-based tool to compress, resize, convert, and combine images into PDF.
    Perf 68
    Acce 100
    Sec 25
    Priv 75
    Rel 100
    Std 100
    Disc 100
    fleximagepro.com · measured 2026-11-10
    7/7 frames
  37. 37
    ImageCraft
    Free browser-based tool for compressing PDFs, images, and GIFs, plus format conversion and background removal.
    Perf 92
    Acce 96
    Sec 45
    Priv 70
    Rel 100
    Std 85
    Disc 72
    myimgcraft.com · measured 2026-11-08
    7/7 frames
  38. 38
    OnePersonAI Ecosystem
    KBFixer is a browser-based tool for compressing and resizing files to a target size.
    Perf 100
    Acce 100
    Sec 45
    Priv 25
    Rel 100
    Std 92
    Disc 100
    kbfixer.onepersonai.in · measured 2026-11-05
    7/7 frames
  39. 39
    Resize Image
    Browser-based tool to compress and resize images to 100KB or less.
    Perf 100
    Acce 100
    Sec 45
    Priv 25
    Rel 100
    Std 92
    Disc 100
    resizeimage.site · measured 2026-11-06
    7/7 frames
  40. 40
    BW Converter
    Online tool that converts color photos to black and white in the browser.
    Perf 90
    Acce 85
    Sec 45
    Priv 100
    Rel 75
    Std 68
    Disc 87
    bwconverter.com · measured 2026-11-07
    7/7 frames
  41. 41
    ImageConverter
    Free browser-based image converter that processes files locally, without uploading them.
    Perf 83
    Acce 100
    Sec 45
    Priv 45
    Rel 100
    Std 92
    Disc 87
    imageconverter.site · measured 2026-11-02
    7/7 frames
  42. 42
    Image Optimizer
    Free tool that compresses phone photos to a size that email servers will accept.
    Perf 58
    Acce 100
    Sec 45
    Priv 45
    Rel 100
    Std 97
    Disc 85
    onlineimageoptimizer.com · measured 2026-11-07
    7/7 frames
  43. 43
    SuperPixMia
    Free browser-based image toolkit for resizing, compressing, converting, and more.
    Perf 84
    Acce 100
    Sec 45
    Priv 25
    Rel 75
    Std 100
    Disc 100
    superpixmia.com · measured 2026-11-06
    7/7 frames
  44. 44
    TinyPNG
    TinyPNG compresses and converts AVIF, JXL, WebP, PNG, and JPG images in the browser.
    Perf 45
    Acce 91
    Sec 60
    Priv 55
    Rel 100
    Std 86
    Disc 85
    tinypng.com · measured 2026-11-03
    7/7 frames
  45. 45
    BatchImage Studio
    Desktop app for batch image compression and conversion, running fully offline.
    Perf 80
    Acce 88
    Sec 45
    Priv 30
    Rel 67
    Std 92
    Disc 100
    batchimagestudio.com · measured 2026-11-08
    7/7 frames
  46. 46
    OptiPress
    OptiPress — Privacy-first batch image optimizer. All compression happens locally in your browser via WebAssemb
    Perf 94
    Acce 83
    Sec 45
    Priv 25
    Rel 100
    Std 100
    Disc 47
    optipress.cdrusu.com · measured 2026-10-28
    7/7 frames
  47. 47
    Snapix
    Browser-based tool to resize photos, signatures, and PDFs for Indian exam portals.
    Perf 93
    Acce 100
    Sec 10
    Priv 25
    Rel 92
    Std 92
    Disc 87
    snapix.surge.sh · measured 2026-10-20
    7/7 frames
  48. 48
    CompressFlo
    Free image compression, conversion, and download tool with bulk processing.
    Perf 94
    Acce 94
    Sec 25
    Priv 25
    Rel 67
    Std 92
    Disc 60
    compressflo.com · measured 2026-11-10
    7/7 frames
  49. 49
    veoimg
    Free browser-based tool to compress, resize, and convert images online.
    Sec 45
    Priv 0
    Rel 100
    Std 75
    Disc 100
    2 not assessed
    veoimg.com · measured 2026-10-30
    5/7 frames
  50. 50
    Redirecting...
    Hikaru Labs is a browser-based file compression and optimization utility.
    Perf 59
    Acce 93
    Sec 45
    Priv 0
    Rel 67
    Std 82
    Disc 25
    hikarulabs.xyz · measured 2026-11-08
    7/7 frames
  51. 51
    allimgtools.app
    Resize and preview images at Facebook Cover dimensions (820x312).
    Perf 100
    Acce 73
    Sec 50
    Priv 25
    Rel 22
    Std 82
    Disc 15
    allimgtools.app · measured 2026-11-09
    7/7 frames
What this does not say
This ranks how production-ready each product's public surface is — not how well it does its job. For image compression tool, that means it does not measure the quality of the work itself. Products whose sites block automated readers are left out rather than ranked last — we did not measure them, and bottom placement would claim something we never observed. Scores are floors: anything set at a CDN, a proxy or behind a login is invisible from the public surface.

All measured categories → · Browse the directory →