Document tools that never see your files
OCR, signatures, certificates, diagrams, email helpers, Markdown, and spreadsheets — one host. Invoice Studio and Rezimo stay on their own hosts because you draft those documents, not run a one-shot job.
No uploadNo signupNo account
Document tools on this host
Each path is its own app from this repository. File converters (HEIC, PDF merge, Redact) stay on tools.sw-commercial.com. Image tools group on images.sw-commercial.com.
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TextLens
Extract text from images and PDFs on-device.
docs.sw-commercial.com/ocr
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Signature Tools
Type or draw a signature and export PNG, SVG, or PDF.
docs.sw-commercial.com/sign
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Cert Tools
Printable certificates and awards as PDFs.
docs.sw-commercial.com/cert
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Diagram Tools
Flowcharts and diagrams drawn in the browser.
docs.sw-commercial.com/diagram
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Email Tools
Signatures, mailto links, and HTML email helpers.
docs.sw-commercial.com/email
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Markdown Tools
Edit, preview, and export Markdown without an account.
docs.sw-commercial.com/markdown
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Spreadsheet Tools
Formula help, sheet viewer, and CSV↔XLSX on the device.
docs.sw-commercial.com/sheets
How these tools are written
Simon Wong ships the apps in the same web-tools-hub repository as Tool Hub. This host exists so docs work is grouped the way file work is grouped — not so every leftover product gets its own subdomain. Guides on sw-commercial.com stay unpublished until a path here returns HTTP 200.