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JSON Formatter Pricing

open sourceopen source · MITlast verified September 6, 2026official site ↗

At a glance

100% free and open-source under the MIT license. JSON Formatter has no subscription fees, paid tiers, telemetry, or ads. It runs entirely client-side in the browser to syntax-highlight and format JSON API responses.

Self-hosting cost

JSON Formatter is open source under the MIT license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage.

Free & cheaper Browser Extensions & DevTools

same category, free plan or open-source license

Requestlyopen sourceRequestly provides a Free plan for basic HTTP interception and API testing, Pro starting at $12/user/month (annual billing option), Team at $23/user/month, and custom Enterprise agreements.HyperbrowserFreemium cloud browser infrastructure (BaaS) for AI agents and web scraping. Free tier includes 5,000 credits ($5 value) and 1 concurrent browser. Paid plans start at Startup ($30/mo, 30,000 credits, 25 concurrency) and Scale ($100/mo, 100,000 credits, 100 concurrency), with Enterprise tiers for 1,000+ concurrency. Usage is credit-based ($0.001/credit): active browser sessions cost 100 credits/hr ($0.10/hr), residential proxy traffic costs 10,000 credits/GB ($10/GB), and scraping costs 1–10 credits/page.Accomplish Coworkeropen sourceAccomplish (formerly Openwork) is a free, open-source local desktop agent. Users can run it without subscription fees by connecting local models via Ollama or supplying their own API keys from providers like Anthropic, OpenAI, or Google.Agent Browseropen sourceFree and 100% open source under the MIT license by Vercel Labs. agent-browser has no software licensing costs or seat restrictions; users only pay for their underlying LLM API provider usage.
JSON Formatter overview →alternatives →

FAQ

How much does JSON Formatter cost?

100% free and open-source under the MIT license. JSON Formatter has no subscription fees, paid tiers, telemetry, or ads. It runs entirely client-side in the browser to syntax-highlight and format JSON API responses.

Does JSON Formatter have a free plan?

Yes — JSON Formatter is open source and free to use.

Can you self-host JSON Formatter for free?

JSON Formatter is open source under the MIT license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage.

What are free or cheaper JSON Formatter alternatives?

Requestly, Hyperbrowser, Accomplish Coworker are in the same category with a free plan or open-source license.

pricing is editorial catalog data (last verified September 6, 2026) — vendors change plans; confirm on the official site before you buy. Reuse this data under CC-BY 4.0 via /data.