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Best ON1 Resize AI Alternatives in 2026

Updated

20 apps from image upscaling software ranked against ON1 Resize AI on the same published basis.

  1. 1
    NextGenUp Free plan LinuxMacself-hostedWebWin Free9.2
    ON1 Resize AI vs NextGenUp
  2. 2
    Bigjpg Free plan AndroidapiiOSMacWeb $6/mo9.1
    ON1 Resize AI vs Bigjpg
  3. 3
    Real-ESRGAN Open sourceLinuxMacself-hostedWebWin 8.8
    ON1 Resize AI vs Real-ESRGAN
  4. 4
    SupaRes Free plan apiWeb $9/mo8.8
    ON1 Resize AI vs SupaRes
  5. 5
    LetsEnhance Free plan api $9/mo8.7
    ON1 Resize AI vs LetsEnhance
  6. 6
    PixelPanda Image Upscaler Free plan apiextensionWeb $1.99/mo8.7
    ON1 Resize AI vs PixelPanda Image Upscaler
  7. 7
    Adima Image Upscaler Pro Free plan AndroidWin $4.99/mo8.6
    ON1 Resize AI vs Adima Image Upscaler Pro
  8. 8
    PicWish Image Upscaler Free plan api Free8.5
    ON1 Resize AI vs PicWish Image Upscaler
  9. 9
    Upscale.media Free plan api $5.83/mo8.5
    ON1 Resize AI vs Upscale.media
  10. 10
    Krea Enhancer Free plan api $9/mo8.4
    ON1 Resize AI vs Krea Enhancer
  11. 11
    Upscal Free plan iOSMacWin Free8.4
    ON1 Resize AI vs Upscal
  12. 12
    Upsampler Free plan api $15/mo8.3
    ON1 Resize AI vs Upsampler
  13. 13
    UpscaleAI Free plan Web $7.99/mo8.3
    ON1 Resize AI vs UpscaleAI
  14. 14
    Topaz Labs API Free plan api $50/mo8.2
    ON1 Resize AI vs Topaz Labs API
  15. 15
    SuperImage Free plan WinMacAndroid Free8.1
    ON1 Resize AI vs SuperImage
  16. 16
    Waifu2x-Extension-GUI Free plan Win $4.99/mo8.1
    ON1 Resize AI vs Waifu2x-Extension-GUI
  17. 17
    Ximilar Image Upscaler Free plan apiWeb $69/mo8.1
    ON1 Resize AI vs Ximilar Image Upscaler
  18. 18
    Imglarger Free plan AndroidiOSMacWeb $9.99/mo8.1
    ON1 Resize AI vs Imglarger
  19. 19
    Topaz Gigapixel apiMacWin $1/mo8.0
    ON1 Resize AI vs Topaz Gigapixel
  20. 20
    Image Upscaler apiWeb $9.90/mo8.0
    ON1 Resize AI vs Image Upscaler

ON1 Resize AI alternatives compared

#AppScoreFree planFromRuns on
1NextGenUp9.2Free planFreeLinux, Mac, self-hosted, Web, Windows
2Bigjpg9.1Free plan$6/moAndroid, API, iOS, Mac, Web, Windows
3Real-ESRGAN8.8No—Linux, Mac, self-hosted, Web, Windows
4SupaRes8.8Free plan$9/moAPI, Web
5LetsEnhance8.7Free plan$9/moAPI
6PixelPanda Image Upscaler8.7Free plan$1.99/moAPI, Browser, Web
7Adima Image Upscaler Pro8.6Free plan$4.99/moAndroid, Windows
8PicWish Image Upscaler8.5Free planFreeAPI
9Upscale.media8.5Free plan$5.83/moAPI
10Krea Enhancer8.4Free plan$9/moAPI
11Upscal8.4Free planFreeiOS, Mac, Windows
12Upsampler8.3Free plan$15/moAPI
13UpscaleAI8.3Free plan$7.99/moWeb
14Topaz Labs API8.2Free plan$50/moAPI
15SuperImage8.1Free planFreeWindows, Mac, Android
16Waifu2x-Extension-GUI8.1Free plan$4.99/moWindows
17Ximilar Image Upscaler8.1Free plan$69/moAPI, Web
18Imglarger8.1Free plan$9.99/moAndroid, iOS, Mac, Web
19Topaz Gigapixel8.0No$1/moAPI, Mac, Windows
20Image Upscaler8.0No$9.90/moAPI, Web
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Questions about ON1 Resize AI alternatives

What is the best alternative to ON1 Resize AI?

NextGenUp, number 1 in image upscaling software with a score of 9.2 out of 10. The others here: Bigjpg, Real-ESRGAN, SupaRes and 16 more.

What is the best free alternative to ON1 Resize AI?

NextGenUp is the best-ranked alternative with a free plan. 17 of the 20 alternatives here publish a free plan on their own pricing pages.

Is there an open-source alternative to ON1 Resize AI?

Yes: Real-ESRGAN.

How are these alternatives ranked?

Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on.