Iteration Layer vs Sharp
Sharp is the best Node.js image library — but it's a library you have to host, scale, and maintain.
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Why developers switch from Sharp
Sharp is the fastest image library, but you still have to deploy, scale, and monitor it yourself.
Zero infrastructure to manage
Sharp depends on libvips, a native C library. That means Docker layers, ARM vs x86 builds, Lambda binary sizes, memory limits for concurrent processing, and OOM kills at 3 AM. We handle all of that.
Any language, not just Node.js
Sharp only runs in Node.js. If your backend is Python, Go, Elixir, or anything else, using Sharp means spinning up a sidecar service. Our API is language-agnostic — one HTTP call from any language.
AI operations as standard pipeline steps
Smart crop with object detection, 4× AI upscaling, and background removal require separate ML models and inference pipelines in Sharp. In our API they are standard operations in the same JSON pipeline as resize and convert.
Feature-by-feature comparison
We went through the docs so you don't have to. Here's how every feature compares — including the ones where we're not the better choice.
| Feature | Iteration Layer | Sharp |
|---|---|---|
| Resize |
Yes
Resize images to exact dimensions or by percentage with multiple fit modes |
Yes
Fast resize with multiple fit and kernel options via libvips |
| Crop |
Yes
Crop images to exact dimensions with configurable anchor points |
Yes
Extract and trim operations with gravity-based positioning |
| Format conversion |
Yes
Convert between image formats as a pipeline step |
Yes
Convert between formats via toFormat or explicit output methods |
| Compression |
Yes
Control output quality and compression level per format |
Yes
Per-format quality and compression control with fine-grained options |
| Rotate / flip |
Yes
Rotate by arbitrary angles and flip horizontally or vertically |
Yes
Rotate, flip, and flop operations with background fill options |
| Blur / sharpen |
Yes
Gaussian blur and unsharp mask sharpening with configurable parameters |
Yes
Gaussian blur and unsharp mask with sigma and flat/jagged parameters |
| Watermark / overlay |
Yes
Composite images and text overlays with positioning and opacity control |
Yes
Image compositing with blend modes, gravity, and opacity control |
| Smart crop (AI) |
Yes
AI-powered object detection for intelligent cropping |
No
Basic attention-based crop heuristic only, no true AI object detection |
| AI upscale |
Yes
4× AI-powered image upscaling |
No
No AI upscaling — only interpolation-based resizing |
| Background removal |
Yes
AI-powered background removal in a single pipeline step |
No
No background removal available without external ML models |
| Output formats |
6 formats
JPEG, PNG, WebP, AVIF, HEIF, and GIF output supported |
6 formats
JPEG, PNG, WebP, AVIF, GIF, and TIFF output supported |
| Pipeline model |
JSON pipeline
Define transformation steps as a JSON array in each API request |
Method chaining
Fluent method chaining API in Node.js with direct libvips bindings |
| Open source |
Proprietary
Closed-source managed SaaS platform |
MIT license
Free and open source under the MIT license |
| Raw performance |
Managed
Cloud-based processing with automatic scaling — no tuning required |
Very fast
Built on libvips, which is 4-5x faster than ImageMagick for most operations |
| Low-level control |
High-level API
High-level JSON pipeline API abstracting away implementation details |
Direct access
Direct access to libvips operations for fine-grained pixel-level control |
| EU hosting |
EU only
All processing happens exclusively on EU-hosted servers |
Your choice
Runs on your infrastructure, so data residency depends on where you deploy |
| Language support |
Any language
REST API callable from any programming language with HTTP support |
Node.js only
Native Node.js library requiring a Node.js runtime environment |
| Pricing model |
Per transformation
Pay-per-use pricing based on the number of transformations processed |
Free
Open source and free to use — costs are limited to your own compute infrastructure |
| Infrastructure required |
None
Fully managed API with no deployment, scaling, or memory management required |
Self-hosted
Requires hosting with Docker, Lambda layers, native binary builds, and memory management |
| GDPR / Data privacy |
Zero retention
No files or results stored beyond temporary 90-day logs |
Your responsibility
Data privacy depends entirely on your deployment and infrastructure choices |
Pricing
Start with free trial credits. No credit card required.
Developer
For individuals & small projects
-
1,000 credits / monthThat's either: 1,000 image transformations 500 document generations 500 image generations 500 sheet generations 200 document extractions (5-page docs) 200 markdown conversions (5-page docs)
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All APIs included
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Free trial credits per API
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Email support
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Budget caps per key
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Optional auto top-up
Startup
Save 40%For growing teams
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5,000 credits / monthThat's either: 5,000 image transformations 2,500 document generations 2,500 image generations 2,500 sheet generations 1,000 document extractions (5-page docs) 1,000 markdown conversions (5-page docs)
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All APIs included
-
Free trial credits per API
-
Priority support
-
Budget caps per key
-
Optional auto top-up
Business
Save 47%For high-volume workloads
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15,000 credits / monthThat's either: 15,000 image transformations 7,500 document generations 7,500 image generations 7,500 sheet generations 3,000 document extractions (5-page docs) 3,000 markdown conversions (5-page docs)
-
All APIs included
-
Free trial credits per API
-
Priority support
-
Budget caps per key
-
Optional auto top-up
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Free trial credits included. No credit card required.