
iLovePDF
Adobe Acrobat DC
Sejda
PDF24
PDF24 - Online PDF Tools
CloudConvert
TinyWow
PDF document management and conversion suite

JSON Crack
JSON Editor Online
CodeBeautify
View, edit, query, and convert JSON, YAML, CSV, XML, Mermaid, Markdown & MDX in one local-first workspace. Tree/table/diagram views, jq/SQL/XPath queries, schema validation, diff. Nothing is uploaded; no account needed.

Which is more popular?
Based on our record, Smallpdf seems to be more popular. It has been mentioned 38 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | smallpdf.com | prettify.tools |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from the United States · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Smallpdf yet.
Prettify is a viewer and editor for the data formats developers actually wrestle with: JSON, YAML, CSV, XML, Mermaid, Markdown, MDX, and HTML, in one fast, local-first workspace. Unlike most online formatters, Prettify is built for devs by devs. Parsing, editing, validation, queries, and...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of Prettify.tools yet.
Walkthroughs and reviews on video.
smallpdf tutorial video
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Smallpdf and Prettify.tools.
Prettify.tools's answer:
Prettify is local-first: your documents are never uploaded to a server. Everything, parsing, editing, validation, queries, conversion, runs entirely on your device, so it's safe for sensitive data like API responses with tokens, customer records, and internal config files. It also covers eight formats in one workspace (JSON, YAML, CSV, XML, Mermaid, Markdown, MDX, HTML) instead of a separate single-purpose tool per format, and works offline as a web app or native desktop app.
Prettify.tools's answer:
Most online JSON tools upload your file to their server and handle only one format. Prettify keeps your data on your device, handles eight formats with Tree, Table, and Diagram views, and goes well beyond formatting: jq, SQL, and XPath query engines, JSON Schema validation, document diff, and type generation. Pro is a one-time $19.99, no subscription, and the free tier has no time limit.
Prettify.tools's answer:
Developers who open, inspect, fix, and reshape data files by hand, API responses, config files, CSV exports, logs, and don't want to paste sensitive data into third-party servers. Also technical writers working in Markdown/MDX and people writing Claude Skills.
Prettify.tools's answer:
Prettify is made by Off Leash Labs, an indie studio in San Francisco. It grew out of everyday frustration with online formatters that upload your files, quietly corrupt large numbers, and each handles only one format; so Prettify was built to do the whole job locally, across formats, with no account and no server.
Prettify.tools's answer:
TypeScript, with Tauri for the native desktop apps. Prettier for formatting, Ajv for JSON Schema validation, quicktype for type generation. The jq engine is hand-written in TypeScript; no WebAssembly.
Share your experience with using Smallpdf and Prettify.tools. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Smallpdf is a well-known online PDF platform with a clean interface. It works entirely in the browser and integrates with Google Drive and Dropbox, making it convenient if you store files in the cloud. The free tier...
Users highlight Docpose.cloud’s reliability—no failed conversions even on rare formats. CloudConvert gets praise for quality tweaks but frustrates with daily resets. iLoveIMG is loved for extras like AI, but free...
Platforms like iLovePDF and Smallpdf are among the most popular choices. They do a decent job for simple PDFs, but I quickly realized a few issues:
We have no reviews of Prettify.tools yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


According to statistics from smallpdf.com, by 2025, there will be a massive 2.5 trillion PDF documents stored worldwide, and 290 billion new PDF documents will be created every year. - Source: dev.to / 11 months ago
Smallpdf [1] probably deserves a mention here. Not OSS and not self-hosted, but I‘ve used it occasionally and it has always worked really well. When I was running an agency, we inherited their first office – very cool folks. [1]... - Source: Hacker News / almost 3 years ago
And use this one to merge two single-page pdf to make a double side page. Source: almost 3 years ago
Tracking Prettify.tools since Oct 2026.
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