Professional Windows software to convert AI chat JSON exports — ChatGPT, Claude, Gemini, Perplexity, DeepSeek and Mistral — to PDF, DOCX, HTML, Markdown, TXT and CSV. Auto-detects platform format automatically. Batch-converts all conversations with complete formatting and metadata preservation.
*Free trial converts first 25 conversations. Upgrade for unlimited conversion.


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AI Chat Data Preserved During Conversion
User Messages
AI Responses
Markdown Formatting
Code Blocks
Timestamps
Conversation Title
Inline Images
Platform Metadata
Tables
Message Threading
Key Features
Built specifically for AI chat JSON exports — handles every platform's unique JSON schema, preserves Markdown formatting and converts thousands of conversations in one batch without a single manual step.
Auto-Detection of AI Platform
Drop any AI chat JSON file onto the converter and it automatically identifies whether it is a ChatGPT conversations.json, a Claude export, a Gemini takeout JSON, a Perplexity export, DeepSeek or Mistral. No manual format selection or configuration required.
Batch Conversion of All Conversations
ChatGPT data exports contain a single conversations.json with every conversation you have ever had. The converter loads the entire file, lists all conversations with title and date, and converts them all in one pass — producing one output file per conversation or a single merged document.
Full Markdown Rendering
AI responses contain Markdown formatting — bold, italic, headings, bullet lists, numbered lists, blockquotes and horizontal rules. The converter renders these correctly in PDF and DOCX output. Code blocks are formatted with monospace font and syntax-appropriate indentation. Plain text and CSV output strips formatting cleanly.
Code Block Preservation
Code blocks in AI responses are preserved with their language tag, monospace font and indentation in PDF and DOCX output. Fenced code blocks (```python, ```javascript etc.) are extracted and formatted as distinct code sections distinguishable from prose text in the converted document.
7 Output Formats
Convert AI chat JSON exports to PDF (for sharing and archiving), DOCX or DOC (for editing and annotation), HTML (for web publishing), Markdown (for developers and note-taking apps like Obsidian), TXT (plain text) or CSV (message-level metadata for spreadsheet analysis).
Conversation Filtering and Selection
Browse all conversations in the loaded JSON with title, date and message count shown. Filter by date range, keyword in title or keyword in content. Select individual conversations or a range. Convert only the subset you need — no need to convert thousands of conversations when you only need ten.
Table and List Preservation
AI models frequently produce Markdown tables and nested lists. The converter renders these as proper formatted tables in PDF and DOCX output and as clean HTML tables in HTML output. Nested bullet lists maintain their indentation hierarchy in all document formats.
100% Offline Processing
Your AI chat history is private. Univik JSON Converter runs entirely on your Windows PC with no internet connection required. Your conversations are never uploaded to any server, API or cloud service during or after conversion. No Anthropic, OpenAI or Google account credentials needed.
Live Preview Before Converting
Click any conversation in the list to preview the rendered output before committing to conversion. The preview shows exactly how the Markdown will render — including code blocks, tables and heading hierarchy — so you can verify the output quality before batch-converting thousands of conversations.
Flexible Output File Naming
Output files are named automatically using the conversation title and date by default (e.g., My-Python-Project-2024-03-15.pdf). Custom naming patterns can include the platform name, conversation ID, date format and sequential number. Consistent naming makes large batch outputs easy to organise.
CSV Metadata Export
CSV output produces a structured spreadsheet with one row per message: conversation title, date, speaker (user or AI model), message content, token count where available and timestamp. Ideal for researchers, prompt engineers and data analysts who need to quantify and analyse AI conversation patterns.
Clean HTML Output
HTML output produces self-contained files with embedded CSS that render correctly in any browser. User messages and AI responses are styled as distinct bubbles with speaker labels. Code blocks have syntax highlighting CSS classes. The output can be published directly to a static website or personal blog.
Everything Preserved from AI Chat JSON During Conversion
Simple Process
No technical knowledge required. Load your JSON export, choose a format and convert in minutes.
Export Your AI Chat Data
In your AI platform, go to Settings → Data Export and request an export. ChatGPT and Claude deliver a ZIP containing a conversations.json or similar file. Download and extract the JSON file to your local machine.
Open JSON File
Launch Univik JSON Converter and click Open File to select your AI chat JSON export. The converter auto-detects the platform, parses the file and lists all conversations with title, date and message count.
Select & Preview
Browse the conversation list and click any conversation to preview it. Apply date range or keyword filters, then select individual conversations or click Select All. The preview shows exactly how the output will look before converting.
Choose Format & Convert
Choose PDF, DOCX, HTML, Markdown, TXT or CSV as your output format. Click Convert. Each conversation is saved as a separate named file or merged into one document. Conversion report shows per-conversation status.
Supported AI Platforms
The converter supports all major AI chat platforms that offer JSON data exports. Format is auto-detected on load.
ChatGPT
conversations.json export
✓ SupportedClaude
Anthropic data export
✓ SupportedGemini
Google Takeout JSON
✓ SupportedPerplexity
Perplexity data export
✓ SupportedDeepSeek
DeepSeek chat export
✓ SupportedMistral
Mistral chat export
✓ Supported Why Convert
AI chat JSON files are unreadable as raw data. Converting makes your conversation history useful, sharable and permanent.
Create Readable Documents
Raw JSON exports are machine-readable but not human-readable. Converting to PDF or DOCX makes your AI conversations readable, printable and shareable without technical knowledge.
Own Your AI History Offline
AI platforms can delete your history, change their export format or shut down. Converting to PDF or DOCX creates a permanent, platform-independent offline copy of your conversations.
Analyse Conversation Patterns
CSV output exports message-level metadata for analysis. Researchers and prompt engineers use this to measure response lengths, analyse topics over time and study how their prompting style evolves.
Build Knowledge Bases
Markdown output is directly importable into Obsidian, Notion, LogSeq and other knowledge management tools. Turn your AI research sessions into permanent, searchable notes in your second brain.
Share With Colleagues
PDF output is ideal for sharing AI-generated research, code reviews or planning conversations with team members who do not have access to the same AI platform or conversation thread.
Compliance & Documentation
Organisations using AI tools for business decisions may need to document and retain AI-assisted work. PDF conversion with timestamps creates an auditable record of AI-assisted analysis and decision-making.
Output Formats
Convert your AI chat JSON exports to any of the formats below. PDF for sharing, DOCX for editing, Markdown for note-taking apps.
Share & archive
DOCX
Word 2007+
DOC
Word legacy
HTML
Web viewable
MD
Obsidian / Notion
TXT
Plain text
CSV
Data analysis
Professional Use Cases
Trusted by researchers, developers, writers and professionals who work with AI tools daily and need to manage their conversation history.
Developers & Engineers
Convert ChatGPT and Claude code sessions to Markdown or PDF. Save debugging conversations, architecture discussions and code review sessions as readable documents. Markdown output integrates directly with wikis and developer documentation systems.
Researchers & Academics
Convert AI-assisted research sessions to PDF or DOCX for citation, documentation and sharing. CSV export enables quantitative analysis of AI conversation patterns, prompt effectiveness and response quality across experiments.
Writers & Content Creators
Convert AI brainstorming, editing and drafting conversations to DOCX for integration into writing workflows. Extract useful AI-generated outlines, character ideas or research summaries from months of ChatGPT sessions.
Business Professionals
Document AI-assisted business analysis, strategy sessions and decision-making conversations. PDF output with timestamps creates an auditable record of how AI tools contributed to business decisions.
Knowledge Management
Convert AI research sessions to Markdown for direct import into Obsidian, Logseq or Notion. Build a searchable personal knowledge base from months of AI conversations without manual copy-pasting.
Data Analysts & Prompt Engineers
CSV export provides message-level data for quantitative analysis. Measure prompt lengths, analyse AI response patterns, track how your prompting style changes over time and benchmark performance across AI models.
Customer Reviews
Verified reviews from professionals who use Univik JSON Converter to manage their AI chat history.
I have 2 years of ChatGPT conversations covering every coding project I have worked on. The batch PDF conversion finished in 20 minutes and the code blocks are perfectly formatted. I now have a searchable offline archive of every AI coding session. Nothing else handled the conversations.json format this cleanly.
I use Claude and Perplexity for academic research and needed to export my sessions as properly formatted PDFs for a research portfolio. The Markdown rendering is accurate — headings, citation lists and tables all came through correctly. The CSV export let me analyse 8 months of prompting patterns for a methodology paper.
Converting Gemini and ChatGPT brainstorming sessions to Markdown and importing them into Obsidian transformed my writing workflow. Three years of AI conversations are now a searchable knowledge base. The Markdown output is clean — no extra whitespace or broken formatting unlike other tools I tried.
Simple Pricing
One-time payment, lifetime license. No subscription fees. Free updates included.
Free Trial
Try before you buy
Personal License
Most popular
Business License
For teams & organisations
Help Desk
Common questions about converting AI chat JSON exports.
Six platforms are fully supported: (1) ChatGPT (OpenAI) — the conversations.json file from a ChatGPT data export; (2) Claude (Anthropic) — Claude's JSON data export; (3) Google Gemini — JSON from Google Takeout; (4) Perplexity AI — Perplexity data export; (5) DeepSeek — DeepSeek chat export; (6) Mistral — Mistral chat export. The converter auto-detects the platform format on load. No manual configuration is required.
Steps: (1) Log into ChatGPT, (2) Click your profile picture in the top right, (3) Go to Settings, (4) Click Data Controls, (5) Click Export Data, (6) Click Confirm export, (7) Wait for an email from OpenAI (usually within a few minutes to an hour), (8) Click the link in the email to download your data ZIP, (9) Extract the ZIP — the conversations.json file is inside, (10) Open Univik JSON Converter and load the conversations.json file. The free trial converts the first 25 conversations with all output formats available.
Steps: (1) Log into Claude.ai, (2) Click your profile in the bottom left, (3) Go to Settings, (4) Click Privacy & Data, (5) Click Export Data, (6) Confirm the export request, (7) Wait for the email from Anthropic with a download link, (8) Download and extract the ZIP, (9) Load the JSON file into Univik JSON Converter. Claude's export format is auto-detected on load.
Yes — this is one of the converter's primary design goals. AI responses contain extensive Markdown including headings (##, ###), bold and italic text, bullet and numbered lists, blockquotes, horizontal rules and fenced code blocks (```python, ```javascript etc.). In PDF and DOCX output, all Markdown is rendered correctly: code blocks appear in monospace font as distinct sections, tables are formatted as proper document tables, headings create a navigable document structure. In TXT output, Markdown is cleanly stripped. In MD output, Markdown is preserved as-is.
The licensed version has no limit. A typical 2-year ChatGPT export may contain 500–2,000 conversations. The converter processes all of them in a single batch, producing one output file per conversation named with the conversation title and date. The free trial converts the first 25 conversations from the loaded JSON file — all output formats are available in the trial.
CSV output produces a spreadsheet with one row per message containing: conversation title, conversation ID, message date and time, speaker (user or AI model name), raw message content (Markdown as-is), message length in characters, and any platform-specific metadata fields available in the JSON (e.g., model version for ChatGPT). This is the format used by researchers and prompt engineers who need to quantify and analyse AI conversation patterns in Excel, Python or R.
Your data never leaves your machine. Univik JSON Converter is a standalone Windows desktop application. It reads the JSON file from your local disk, converts it and writes the output files to your local disk. No API calls are made, no data is uploaded to any server, and no internet connection is required or used during conversion. This is particularly important for users whose AI conversations contain confidential business information, client data or personal matters.
Minimal requirements:
No internet connection, no AI platform account and no OpenAI or Anthropic API key required.
Yes. Markdown (.md) output files are fully compatible with Obsidian, Logseq, Notion, Bear, Joplin, Typora and any other Markdown-based note-taking or knowledge management application. In Obsidian, simply place the converted .md files in your vault folder — they will appear immediately as searchable notes with their headings forming the document outline. Conversation title becomes the note title. Timestamps and platform metadata are preserved as front matter if enabled in conversion settings.
Free trial converts the first 25 conversations per JSON file. All 7 output formats are fully functional in the trial — PDF, DOCX, DOC, HTML, Markdown, TXT and CSV. The preview feature, platform auto-detection, Markdown rendering, code block formatting and conversation filtering are all available with no limitations. No time limit on the trial. Verify output quality for your specific AI platform and export before purchasing ($39 personal, $99 business).
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