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DevHexLab: Free Developer Tools
DevHexLab is a free, privacy-first collection of 200+ online developer tools. All tools run entirely in the browser: no login, no uploads, no data sent to any server.
For agents: DevHexLab: 200+ free browser-based developer tools, including PDF conversion, HTML email testing and merging, with no login or server uploads.
free developer toolspdf toolshtml email testerbrowser-basedprivacy-first
Their llms.txt
The beginning of the file, from our validated copy saved 2026-10-25T10:11:14.593Z. Cached copy · Source on devhexlab.com
# DevHexLab: Free Developer Tools
> DevHexLab is a free, privacy-first collection of 200+ online developer tools. All tools run entirely in the browser: no login, no uploads, no data sent to any server.
## About
DevHexLab provides instant, client-side tools for developers covering JSON formatting, encoding/decoding, time/date utilities, color tools, text processing, security utilities, image conversion, CSS generators, JavaScript utilities, network tools, converters, developer references, and document/PDF tools.
**URL:** https://devhexlab.com
**Contact:** https://devhexlab.com/contact
**Sitemap:** https://devhexlab.com/sitemap.xml
## Key Facts
- All tools are 100% free with no login required
- All processing happens client-side in the browser
- No data is uploaded to any server
- Works offline once loaded
- 200+ tools across 14 categories
## Tool Categories
### Document & PDF
Convert, merge, split, and transform PDFs, Word documents, and images directly in your browser, no uploads, no server, no account required. Whether you need to merge multiple PDFs, extract pages, or convert between formats, these tools handle it all locally so your files stay private.
- [HTML Email Tester](https://devhexlab.com/tools/document/html-email-tester): Preview HTML email snippets and flag common email-client compatibility issues.
- [PDF to Images](https://devhexlab.com/tools/document/pdf-to-images): Convert each page of a PDF into a PNG or JPEG image: runs entirely in your browser
- [PDF to Text](https://devhexlab.com/tools/document/pdf-to-text): Extract all text content from a PDF file without any server upload
- [HTML to PDF](https://devhexlab.com/tools/document/html-to-pdf): Paste HTML and download it as a formatted PDF document instantly
- [Merge PDF Files](https://devhexlab.com/tools/document/merge-pdf): Drag and drop multiple PDFs to merge them into a single file: no upload needed
- [Word to HTML](https://devhexlab.com/tools/document/word-to-html): Upload a .docx file and convert it to clean, readable HTML instantly
- [Word to Plain Text](https://devhexlab.com/tools/document/word-to-text): Extract plain text from any .docx Word document: no Office needed
- [HTML to Word](https://devhexlab.com/tools/document/html-to-word): Convert HTML content into a downloadable .docx Word document
- [Markdown to Word](https://devhexlab.com/tools/document/markdown-to-word): Convert Markdown text into a properly formatted .docx Word document
- [Word to PDF](https://devhexlab.com/tools/document/word-to-pdf): Convert a .docx Word document to a PDF file: entirely in your browser
- [PDF to Word](https://devhexlab.com/tools/document/pdf-to-word): Extract text from a PDF and export it as a downloadable .docx Word document
- [PDF to HTML](https://devhexlab.com/tools/document/pdf-to-html): Extract content from a PDF and convert it to clean HTML: preview and download
- [Markdown to PDF](https://devhexlab.com/tools/document/markdown-to-pdf): Paste Markdown and download it
…
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