String Utility Belt vs Chapar
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
String Utility Belt compared with Chapar
| Detail | 
String Utility Belt | 
Chapar |
|---|
| What it does | Free online string and text tools for encoding, decoding, hashing, formatting and converting text in your browser
| A fast, private and offline API client for REST, gRPC, GraphQL and WebSocket services
|
|---|
| Stage | Not given
| Not given
|
|---|
| Founded | Not given
| Not given
|
|---|
| Based in | Not given
| Not given
|
|---|
| Pricing model | Free
| Open source
|
|---|
| Pricing | Not given
| Not given
|
|---|
| Key features | - Base64 encoding and decoding
- URL encoding and decoding
- JSON formatting, validation and minifying
- JWT decoding with readable timestamps
- SHA-256 and other cryptographic hashing
- UUID generation with multiple versions
- Text diffing with multiple formats
- Chainable pipelines with live preview
- CSV to JSON and JSON to YAML conversion
- Regular expression explanation in plain English
| - REST and HTTP with every method, query and path params, JSON, XML, text, form-data, URL-encoded and binary bodies
- gRPC with server reflection or proto files, unary and server-streaming calls, metadata and trailers, TLS and mutual TLS
- GraphQL queries and variables with data and errors split out
- WebSocket text, JSON and binary messages with live message log
- Traffic proxy to capture HTTP(S) traffic of apps and phones
- Python scripting for pre and post-request scripts with tests
- Test cases and CI integration with chapar-cli
- Environments with variables and secret values encrypted with OS keychain
- Import Postman collections, OpenAPI specs and proto files
- Code generation for cURL, Python, Go, JavaScript, Java, Ruby and .NET
|
|---|
| What makes it different | - All processing happens in your browser with no data uploaded to servers
- Chain multiple tools into pipelines with live preview of each step
- Available across VS Code, CLI, MCP and as a Node.js library
- No cookies or tracking scripts, privacy-focused
- 248 utilities organized by category with guides and worked examples
| - Local-only data with no cloud sync or telemetry
- GPU-rendered native UI that starts quickly and runs on macOS, Linux and Windows without a browser engine
- Collections stored as YAML files in git for version control
- Built-in traffic proxy for inspecting and importing HTTP(S) traffic from other apps
- Free and open source under BSD 3-Clause license
|
|---|
| Free plan | Not given
| Not given
|
|---|
| Open source | Not given
| Not given
|
|---|
| Platforms | Not given
| Not given
|
|---|
| Public API | Not given
| Not given
|
|---|
| Community votes | 0 | 0 |
|---|
| DR (Domain Rating by Ahrefs) | 38 ▲ +1 (up) since last check | 6 ● no change since last check |
|---|
| Trust Flow (Majestic) | 5 | 5 |
|---|
| Citation Flow (Majestic) | 24 | 26 |
|---|
| Referring domains (Majestic) | 18 | 31 |
|---|
4 details filled in for both companies.
More alternatives to String Utility Belt More alternatives to Chapar