Dev tools · alternatives · 2026

24 alternatives to El Validator

A JSON Object Validator and Sanitizer to check User-Input

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. El Validator launched in 2022; newer entries below may have overtaken it.

1
Validator▲345
Research and validate you micro saas ideas fast as Cheetah
2024 · validator.help · its alternatives →
2TW
This website is valid JSON▲604
2020 · webdatarender.com · its alternatives →
3
Verify JSON using minimal schema▲91
verify-json. Contribute to yusufnb/verify-json development by creating an account on GitHub.
2020 · github.com · its alternatives →
4
volder▲63
Schema builder and data validation for javascript
2022 · github.com · its alternatives →
5
JSON storage bins with schema validation▲74
2018 · npoint.io · its alternatives →
6
Schema Validator▲6
Free json-ld & schema.org validator tool
Nov 2025 · schemavalidator.com · its alternatives →
7
Pg_jsonschema – A Postgres extension for JSON validation▲203
pg_jsonschema is a solution we're exploring to allow enforcing more structure on json and jsonb typed postgres columns. We initially wrote the extension as an excuse to play with pgx, the rust framework for writing postgres extensions. That let us lean on existing rust libs for validation (jsonschema), so the extension's implementation is only 10 lines of code :) https://github.com/supabase/pg_jsonschema/blob/fb7ab09bf6050... happy to answer any questions!
2022 · github.com · its alternatives →
8
Schema Validator Browser Extension▲122
Boost SEO with One-Click Schema & Rich Results Testing
2023 · sproutseo.io · its alternatives →
9
Generate React forms from JSON form schemas▲107
Generate, validate, and parse React forms using Mongoose-inspired JSON schemas - SteveVitali/react-form-generator
2015 · github.com · its alternatives →
10
Checker▲124
Detect fake signups in under 200ms with an easy-to-use API
2025 · its alternatives →
11
Structured data validator▲11
A full-featured schema.org rich cards validation tool
2020 · redirection.io · its alternatives →
12
Validatorapp▲120
Idea and MVP validation software
2020 · validatorapp.com · its alternatives →
13
JSON Formatter & Validator▲7
Professional online json tool | format, validate & convert
2025 · instantconvert.online · its alternatives →
14
JSONverify▲92
A web tool that validates and format JSON objects
2021 · jsonverify.com · its alternatives →
15
JSON Formatter and validator▲18
free online Json formatter and validator
2025 · its alternatives →
16
JSON Formatter and Validator▲81
Useful JSON online tools
2022 · jsonformatter.net · its alternatives →
17
JSON Utils▲6
Free online json formatter, validator & editor tool
2025 · onlinejsonutils.com · its alternatives →
18
Schema Markup Validator▲1
Validate JSON-LD, detect Microdata/RDFa
Feb 2026 · zirasoftware.com · its alternatives →
19
JSON Formatter & Validator▲6
Free online json tools with syntax highlighting
2025 · json.toolaska.com · its alternatives →
20
Validater – a python tool to validate data by schema▲5
A simple, fast, extensible python library for data validation. - guyskk/validr
2016 · github.com · its alternatives →
21
An extensible JSON viewer, editor, formatter, validator and more▲10
An extensible JSON Viewer, Editor, Formatter, Validator based on Monaco Editor - agneym/json-formatter
2019 · github.com · its alternatives →
22
Json Formatter Online▲6
Free online JSON formatter & validator tool
2024 · its alternatives →
23
JSON Formatter and Validator▲6
For JSON Lovers
2017 · jsonformatter.org · its alternatives →
24
Image Validator▲29
Free diagnostic web tool for your product images
2022 · image-validator.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →