Comparison

ImageKit vs Thumbor

On the evidence we track, Thumbor leads this comparison with a composite score of 56/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

ImageKit full profile →Thumbor full profile →

Machine formatsMarkdown JSON GraphQLAll open, no key required.

ImageKit46

★Thumbor56

Attribute comparison across 2 tools
Attribute	ImageKit	ThumborLeader
vioscaleAI score	46 / 100low · 24%	56 / 100low · 49%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	freemium	open_source
Price levelpricing.price_level	-	free
Security
Iso27001security.iso27001	✓	-
Scorecardsecurity.scorecard	-	6.9
Soc2security.soc2	✓	-
Vulnerabilitiessecurity.vulnerabilities	-	Count: 6 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=thumbor&per_page=100 · Last 12m: 6 · Max severity: HIGH
Adoption
Dependent reposadoption.dependent_repos	-	106
Github starsadoption.github_stars	-	10,517
Activity
Commits last 30dactivity.commits_last_30d	-	32
Release
Cadence daysrelease.cadence_days	-	22
Historyrelease.history	-	20 items
License
Spdxlicense.spdx	-	MIT
Language
Primarylanguage.primary	-	Python
Content
Faqcontent.faq	-	3 items

Score

vioscaleAI score

ImageKit46 / 100low · 24%

Thumbor56 / 100low · 49%

Pricing

Free tier

ImageKit✓

Thumbor✓

Model

ImageKitfreemium

Thumboropen_source

Price level

ImageKit–

Thumborfree

Security

Iso27001

ImageKit✓

Thumbor–

Scorecard

ImageKit–

Thumbor6.9

Soc2

ImageKit✓

Thumbor–

Vulnerabilities

ImageKit–

ThumborCount: 6 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=thumbor&per_page=100 · Last 12m: 6 · Max severity: HIGH

Adoption

Dependent repos

ImageKit–

Thumbor106

Github stars

ImageKit–

Thumbor10,517

Activity

Commits last 30d

ImageKit–

Thumbor32

Release

Cadence days

ImageKit–

Thumbor22

History

ImageKit–

Thumbor20 items

License

Spdx

ImageKit–

ThumborMIT

Language

Primary

ImageKit–

ThumborPython

Content

Faq

ImageKit–

Thumbor3 items

Capabilities

Feature-by-feature on the axes that matter for image optimization. “-” means undocumented, not absent.

Capability comparison for Image Optimization
Capability	ImageKit	Thumbor
Capabilities
Architecture model	-	-
On the fly URL parameter resizing and cropping	-	✓
Auto webp avif format negotiation via browser headers	-	-
AI smart crop face detection centering	-	✓
Lossless and perceptual lossy compression algorithms	-	✓
Global CDN edge delivery network included	-	-
Watermarking and text overlay via URL API	-	-
Video transcoding and gif to mp4 conversion	-	-
Svg sanitization and optimization	-	-
Dashboard analytics for bandwidth cache hit ratio	-	-
SOC2 type ii	-	-
ISO 27001	-	-
Pricing model	-	-

Capabilities

Architecture model

ImageKit-

Thumbor-

On the fly URL parameter resizing and cropping

ImageKit-

Thumbor✓

Auto webp avif format negotiation via browser headers

ImageKit-

Thumbor-

AI smart crop face detection centering

ImageKit-

Thumbor✓

Lossless and perceptual lossy compression algorithms

ImageKit-

Thumbor✓

Global CDN edge delivery network included

ImageKit-

Thumbor-

Watermarking and text overlay via URL API

ImageKit-

Thumbor-

Video transcoding and gif to mp4 conversion

ImageKit-

Thumbor-

Svg sanitization and optimization

ImageKit-

Thumbor-

Dashboard analytics for bandwidth cache hit ratio

ImageKit-

Thumbor-

SOC2 type ii

ImageKit-

Thumbor-

ISO 27001

ImageKit-

Thumbor-

Pricing model

ImageKit-

Thumbor-

What each one is

The product in its own terms, so the numbers below have context.

ImageKit

Not documented yet.

Thumbor

Leader

Thumbor is an open-source image processing service that automatically optimizes images on-demand using smart face detection. It supports dynamic cropping, resizing, format conversion (including WebP), and image filters to improve website performance and reduce file sizes.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

ImageKit

Pricing not documented yet.

Thumbor

Leader

Open sourceFree tier

as of 2026-09-01verify ↗

Still deciding?

ImageKit or Thumbor: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.