Comparison

HTML Viewer Editor Convert PDF vs JSON Viewer and Editor

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

HTML Viewer Editor Convert PDF

This app allows users to instantly open, view, and edit HTML files directly on their device. It offers features like JavaScript toggling, dark mode, and conversion to PDF, ensuring privacy and speed with on-device processing.

Highlights
  • Instant HTML file opening
  • JavaScript toggling and dark mode
  • Search and inspect HTML source
  • Convert HTML to PDF
  • Bulk PDF conversion
  • Built-in HTML editor with live preview
  • On-device processing for privacy
Features
Read full description

Meet HTML Viewer — a fast, elegant html viewer built for people who work with HTML every day. Open local files instantly, switch JS on/off, read comfortably in dark mode, convert to PDF in seconds, and share with confidence. No servers, no waiting — everything is processed on your device for speed and privacy. Why this html viewer stands out Instant open: Load any local .html file or paste HTML and preview immediately in a true html viewer. Precision rendering: Toggle JavaScript on/off, adjust font size and line-height, zoom, and invert for a comfortable dark view — the html viewer adapts to you. Search & inspect: Find-in-page and view source so you can locate and understand content fast, right inside the html viewer. Export to PDF: Turn on‑device rendering into clean PDFs — directly from the html viewer — and share or archive with one tap. Bulk convert: Pick multiple HTML files and convert them to PDFs with progress feedback, then open each result from the list when you’re ready. Built‑in editor: Edit HTML with a live preview, search the code, share the updated HTML, or export a polished PDF — without leaving the html viewer environment. On‑device processing: Your files stay on your device. The html viewer keeps your documents private and responsive. Modern iOS design: A refined, glass‑like interface that makes your html viewer feel premium and effortless. What you can do today Open local HTML files and paste HTML for instant preview in the html viewer Toggle JavaScript, enable dark reading, and fine‑tune typography Search within the page and view source Export single HTML to PDF or bulk convert multiple files Edit HTML with a live preview; share HTML or export to PDF Who it’s for Anyone who needs a reliable html viewer to open and read HTML files quickly Creators and professionals who convert HTML to clean PDFs often Power users who want an html viewer to edit, preview, and share — all in one place Privacy and performance Everything is processed on your device; the html viewer is optimized for speed and designed to respect your files. 'We offer a 3 days free-trial followed by a weekly 4.99 USD plan. And also we offer a lifetime plan to have premium access forever with 14,99 USD. Terms of use EULA: https://sites.google.com/view/xmleula/home Privacy Policy: https://sites.google.com/view/odtconverterreader/home

About

JSON Viewer and Editor

This app allows users to view, edit, format, validate, compare, and convert JSON files with an intuitive interface. It offers features like tree and code views, a smart editor with live validation, and the ability to export to various formats. It also includes an API client and a JSON comparison tool.

Highlights
  • Tree and code view with syntax highlighting
  • Smart JSON editor with live validation
  • JSON fixer for repairing broken files
  • Export to PDF, Excel, YAML, CSV, XML
  • API client for sending HTTP requests
  • Side-by-side JSON comparison
  • JSON Schema validation and JSONPath querying
Features
Read full description

Open, inspect, edit and repair JSON files on your iPhone or iPad. JSON Viewer and Editor works offline, requires no account and keeps your documents on your device. VIEW JSON CLEARLY Browse objects and arrays in an expandable tree, search values and follow breadcrumb paths through deeply nested data. Switch to formatted code with syntax highlighting and line numbers whenever you need the raw document. EDIT AND REPAIR Edit JSON in the text editor or change values directly from the tree. Add, delete, duplicate and reorder nodes. JSON Fixer can repair common problems such as trailing commas, missing quotes and unquoted keys. COMPARE FILES Open two documents side by side and inspect additions, deletions and changed values. Import from Files, paste text or fetch JSON from a URL. VALIDATE AND QUERY Validate documents against JSON Schema Draft 7 and see useful error locations. Run JSONPath expressions and inspect matching values immediately. CONVERT AND EXPORT Convert JSON to YAML, CSV, XML or key-value text. Export results to PDF or Excel, save them to Files, print them or share them with another app. API AND HAR TOOLS Send GET, POST, PUT, PATCH and DELETE requests with custom headers and bodies. Inspect response status, timing and size, then open the response in the JSON viewer. HAR files open with a request summary for easier debugging. BUILT FOR REAL FILES • Open JSON documents directly from the Files app • Search, sort and navigate nested data • Resume your previous session • Save frequently used documents as favorites • Start from ready-made JSON templates • Use dark or light appearance • Work in 15 supported interface languages The free version includes the core viewer, formatter and editor and is supported by advertising. A one-time Pro purchase removes advertising and unlocks unlimited tabs, JSON Compare, schema validation, the API client and advanced conversion and export tools. There is no subscription. PURCHASES • JSONVEdit Pro Lifetime — $9.99, one payment • Payment is charged to your Apple Account at confirmation of purchase • One-time purchase — no subscription and no renewals Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://cosmovex.web.app/apps/jsonvedit/privacy-policy

Screenshots

HTML Viewer Editor Convert PDF3 screens
JSON Viewer and Editor4 screens

Verdict

The call

The clearest difference is review sentiment: JSON Viewer and Editor at 50% against HTML Viewer Editor Convert PDF's 0%. JSON Viewer and Editor also leads on in-app purchases (none vs 2) and update cadence (every 3 months vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. HTML Viewer Editor Convert PDF sells 2 in-app purchases, starting at $4.99 per 7 days. JSON Viewer and Editor asks for nothing beyond the download.

UpkeepUpdate frequency

HTML Viewer Editor Convert PDF ships an update every 9 months, JSON Viewer and Editor every 3 months. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.

Scorecard4 real differences · 6 level
HTML Viewer Editor Convert PDF versus JSON Viewer and Editor: the parameters behind the verdict, then further details
ParameterHTML Viewer Editor Convert PDFJSON Viewer and Editor
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews50.0% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 9 monthsEvery 3 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size47 MB41 MB
Age rating4+4+
DeveloperNEURASYNCSahana A S

Customer experience

HTML Viewer Editor Convert PDF

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

JSON Viewer and Editor

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

2 purchases

HTML Viewer Editor Convert PDF

Subscriptions1
  • HTML Viewer Pro Weekly Sub3 Days trial$4.997 Days
One-time1
  • HTML Viewer Lifetime Pro Access$14.99
None

JSON Viewer and Editor

No in-app purchases

Questions

Is HTML Viewer Editor Convert PDF free?
HTML Viewer Editor Convert PDF is free to download, with in-app purchases available.
Is JSON Viewer and Editor free?
JSON Viewer and Editor is free to download, with no in-app purchases.
Do HTML Viewer Editor Convert PDF or JSON Viewer and Editor have ads?
Neither HTML Viewer Editor Convert PDF nor JSON Viewer and Editor shows ads.
Which is updated more often, HTML Viewer Editor Convert PDF or JSON Viewer and Editor?
HTML Viewer Editor Convert PDF ships an update every 9 months, and JSON Viewer and Editor every 3 months. Most recently, HTML Viewer Editor Convert PDF was updated on October 14, 2026 and JSON Viewer and Editor on October 13, 2026.

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