Work · alternatives · 2026

24 alternatives to Rsizer

Resize, optimize or convert your images in a few seconds.

Rsizer is a free, open-source image optimization service that resizes, converts, and caches images globally. Users provide an image URL and desired parameters, and the service handles resizing, format conversion to… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Rsizer launched in 2015; newer entries below may have overtaken it.

1. 1
   Promo.com Free Image Resizer▲234

   Automatically optimize images for web & social media (free!)

   2018 · promo.com · its alternatives →

2. 2
   GIF Resizer▲270

   Create animated GIFs and resize GIFs too big to tweet!

   2016 · its alternatives →

3. 3
   Resizer▲151

   Double the size of your image while reducing noise

   2021 · resizer.in · its alternatives →

4. 4
   Free Image Resizer▲142

   Resize Image in one click for all social media platforms

   2024 · its alternatives →

5. 5
   Image Resizer 2.0▲120

   Resize your images in 3 easy steps for free, by Promo.com

   2021 · promo.com · its alternatives →

6. 6
   Online Video Resizer▲322

   Resize any video perfectly for social media

   2017 · kapwing.com · its alternatives →

7. 7
   Image Resizer▲12

   Resize your images quickly, perfect every time.

   2023 · goonlinetools.com · its alternatives →

8. 8
   Bulk Image Resizer▲76

   Resize images in bulk for free

   2023 · its alternatives →

9. 9
   Image Resizer▲7

   resize and optimize images online free Image Resizer Tool.

   2025 · imageresizer.tools · its alternatives →

10. 10
    Rasterizer.io▲127

    Make dynamic images

    2021 · its alternatives →

11. 11
    Bulk Resize Photos▲118

    Resize batches of images or photos

    2015 · bulkresizephotos.com · its alternatives →

12. 12SI
    Simple image resizing/optimization service▲171

    2017 · scaley.io · its alternatives →

13. 13
    Online Image Resizer▲6

    Easily resize and compress images online for free

    2024 · resize-image.com · its alternatives →

14. 14
    ImageResize▲99

    Simple workflow for resizing images in slack

    2018 · its alternatives →

15. 15
    ResizePixel▲93

    Easy to use online image editor

    2018 · resizepixel.com · its alternatives →

16. 16
    Bulk Image Resizer▲10

    100% Free, No Login, Privacy Friendly

    2024 · imagetoolshub.com · its alternatives →

17. 17
    ImageResizer.dev▲3

    Free online image editing & optimization 47 tools

    Jul 2026 · imageresizer.dev · its alternatives →

18. 18
    Easy Resizer▲9

    Easily resize your images in bulk

    2024 · easyresizer.com · its alternatives →

19. 19
    ImageResizer — Resize & Compress Images ▲1

    Instant image resizing & compression. 100% private & free

    Sep 2026 · ron201029.github.io · its alternatives →

20. 20
    Online Image Resizer▲2

    Online Image Resizer without Losing Quality

    Jun 2026 · free2tools.com · its alternatives →

21. 21
    Image Converter▲82

    Convert, crop or resize an image directly from its URL

    2022 · image.pagenflow.com · its alternatives →

22. 22FO
    Firesize – On-the-fly image resizing, no code required▲58

    2015 · firesize.com · its alternatives →

23. 23RI
    Rasterizer.io – Make Dynamic Images▲10

    2021 · rasterizer.io · its alternatives →

24. 24
    Image Resizer▲2

    Resize images in bulk with precise dimensions and file sizes

    Aug 2026 · onlinetoolshouse.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →