Extism

Extism

Dylibso
+
+

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About

ConvertYard is a browser-based file conversion platform powered by WebAssembly. All processing happens on your device — files never leave your browser. Image tools: Convert HEIC, JPG, PNG, WebP, and AVIF formats. Compress, resize, and remove backgrounds in bulk. PDF tools: Merge PDFs, compress file size, extract pages, delete pages, crop, add page numbers, and export pages as images. Video & audio: Convert between formats and extract audio tracks. Developer utilities: Format JSON, encode/decode Base64, convert JSON to CSV. AI tools: Auto-generate alt text for images to improve accessibility. All tools support batch processing of up to 1,000 files per run. Results are packaged into a single ZIP download. No account required, no watermarks, no file size paywalls. Works offline after the initial page load via WebAssembly caching. Clean interface with no ads inside the conversion workflow.

About

Extism is an open-source, universal plug-in system to make all software programmable, and it's powered by WebAssembly. In-depth documentation, constantly updated as the project grows. 15+ officially supported Host SDKs, making Extism embeddable in the most popular languages. 7+ officially supported PDKs, to write plug-ins in whichever language a developer would like. A growing set of runtime features makes Extism an excellent plug-in system for apps of all types & sizes. Fully-featured canonical reference demo with Elixir host SDK, and plugins in Rust, TypeScript, & Javascript. Implementation of a turn-based multiplayer game platform and games included to play and review. Games are implemented as WebAssembly modules containing a specific set of exports. Check out the source code on GitHub, download the installer, and get started. 100% open-source code. Fork it, experiment, & run your own game server.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Developers, designers, marketers, content creators, and small business owners who need private, bulk file conversion without account registration or cloud uploads.

Audience

Developers searching for a free solution to write plug-ins for apps of all types and sizes

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$0
Free Version
Free Trial

Pricing

Free
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

ConvertYard
Founded: 2026
Philippines
convertyard.com

Company Information

Dylibso
United States
dylibso.com/products/extism/

Alternatives

Alternatives

AssemblyScript

AssemblyScript

The AssemblyScript Project
Pixillion

Pixillion

NCH Software
Nakama

Nakama

Heroic Labs

Categories

Categories

Integrations

.NET
AssemblyScript
C
C++
Elixir
GitHub
Go
Haskell
Java
JavaScript
Node.js
OCaml
PHP
Python
R
Ruby
Rust
TypeScript
WebAssembly
Zig

Integrations

.NET
AssemblyScript
C
C++
Elixir
GitHub
Go
Haskell
Java
JavaScript
Node.js
OCaml
PHP
Python
R
Ruby
Rust
TypeScript
WebAssembly
Zig
Claim ConvertYard and update features and information
Claim ConvertYard and update features and information
Claim Extism and update features and information
Claim Extism and update features and information