Cycling through all six. Tap any point to stop.

Measured on six things

Free online JSON to Excel converter with developer API.

Security

HTTPS and HSTS enforced, but missing CSP, frame protection, and other headers. No compliance certifications found. Claims data not stored, but no third-party verification.

Screenshots

1 / 3

JSON Support

About this app

JSON Support is a free, no-sign-up online tool that instantly converts JSON data to Excel (.xlsx) files. It's built for developers, data analysts, and anyone who needs to transform JSON from APIs, databases, or logs into a readable spreadsheet. The tool offers a clean interface where you can paste or upload JSON (or CSV) files, preview the first few rows, and download the formatted Excel file. It's lightning fast, secure (data is not stored), and also provides a rate-limited developer API for integrating conversion into your own products. With additional tools like Excel to JSON conversion and a JSON formatter/validator, JSON Support is a handy utility for data manipulation.

Key features

1Free, no-sign-up JSON to Excel conversion with paste or upload
2Preview first few rows before downloading .xlsx
3Rate-limited developer API for integration

Target customer profile

Drawn from the product itself, not from a survey.

Demographic

Data analysts and business intelligence professionals

Pain points

Need to quickly analyze JSON data from APIs or exports in Excel; manual conversion is time-consuming and error-prone

Primary needs

Fast, accurate conversion without sign-up; ability to preview data; reliable output

Demographic

Software developers and engineers

Pain points

Have JSON responses or database exports that need to be shared or analyzed; want a quick tool to convert without writing code

Primary needs

Simple conversion, API availability, secure processing, no data storage

Demographic

Non-technical professionals (e.g., product managers, marketers) working with JSON data

Pain points

Struggle to interpret JSON data from technical colleagues; need a user-friendly way to view it in Excel

Primary needs

Ease of use, no registration, clear preview, downloadable .xlsx

Scout Review

Written by AI from measured evidence, scored out of 100.

JSON Support is a solid, free utility for converting JSON to Excel. It nails the basics: clean design, easy workflow, and a useful preview. Performance is good, though LCP could be better. Security is adequate but not robust. Accessibility is excellent. Growth potential is limited by a crowded market, but the API and no-sign-up approach offer a niche. Overall, a competent tool that does what it promises without fuss.

Measure by measure

Usability

Intuitive flow: paste/upload, preview, download. Clear steps and large CTA. Lacks inline validation feedback and active tab state could be clearer.

Design

Clean, modern design with consistent green accent, good hierarchy, and generous white space. Minor issues: narrow footer columns and visual competition from API upsell box.

Speed

Lighthouse mobile 75/100 with LCP 5.9s (needs improvement), but CLS 0 and TBT 203ms are solid. Desktop 79/100. Serverless claims align with fast processing.

Security

HTTPS and HSTS enforced, but missing CSP, frame protection, and other headers. No compliance certifications found. Claims data not stored, but no third-party verification.

Accessibility

Lighthouse a11y score 100/100, indicating strong automated checks. No explicit WCAG statement or multi-language support, but core interactions are keyboard-accessible.

Growth

Real problem, clear differentiators (free, no sign-up, API), but crowded category. Targets multiple segments with specific use cases. New domain, traction unproven.

Improvement areas

Add inline JSON validation with error messages
Improve LCP performance (5.9s on mobile)
Publish a security page with data handling details

Design & Usability

JSON Support presents a clean, modern interface with a consistent green accent that ties the brand together. The homepage hero is clear, and the converter card is well-structured with a large, full-width CTA. Usability is strong: the paste/upload tabs are straightforward, and the numbered steps guide first-time users. However, the active tab state relies on a thin underline that could be more prominent, and there's no inline validation feedback before conversion. The API upsell box directly under the CTA creates slight visual competition, but overall the design is above average for a utility tool.

Speed & Security

Performance is decent: Lighthouse mobile scores 75/100 with a 5.9s LCP that could be improved, but CLS is 0 and TBT is low, indicating a stable and responsive interface. Desktop scores 79/100. Security is a mixed bag: HTTPS and HSTS are enforced, but missing CSP, frame protection, and other headers leave room for improvement. The site claims data is not stored, which is good, but no third-party certifications like SOC 2 are present. For a free tool, this is acceptable, but not exemplary.

Accessibility & Growth

Accessibility is a highlight with a perfect Lighthouse score of 100/100, though no explicit WCAG statement exists. The site is keyboard-navigable and has good contrast. Growth potential is moderate: the problem is real, and the free, no-sign-up approach with an API is a differentiator, but the category is crowded with similar tools. The domain is new, so traction is unproven. The API could be a wedge for developers, but it needs to stand out more.

Conclusion

If you need a quick, no-frills JSON to Excel conversion, JSON Support is worth a try. It's free, fast, and respects your privacy. The API is a nice bonus for developers. While it won't revolutionize the category, it's a reliable choice for everyday data tasks.

Suggestions for improvement

Add inline JSON validation with error messages before conversion.
Improve LCP by optimizing hero images or using lazy loading.
Publish a security page with details on data handling and compliance.
Add multi-language support to reach a broader audience.

How we score

Alternatives comparison

Named competitors, point by point. Nobody paid to appear here or to be left out.

	JSON Support	ConvertCSV.com	JSON to Excel Converter by Aspose	Online-Convert.com
Pricing	Free, no sign-up	Free with ads	Free with limits	Freemium
API Access	Yes, rate-limited with free tier	No	No	Yes, paid
Preview Before Conversion	Yes, first few rows	No	No	No
Data Storage	Not stored	Not specified	Not specified	Stored temporarily