# Paperwell > Your paperwork in one dossier: PDF tools, OCR, redaction, forms and contract reading. Paperwell is a document studio that keeps everything about one matter in a dossier: PDFs, scans, office files and pasted texts, every tool run and its result. Merge, split, compress, OCR, redact, fill and sign PDFs; read contracts, privacy policies and forms in plain language; compare offers and versions over time; turn notice periods into calendar reminders and print one consolidated report. Files are processed by the site’s tools and deleted there; the dossier itself stays in your browser. Paperwell (Document studio: PDFs, OCR, redaction, forms & contract reading) is a premium app of usefulweb.app (https://usefulweb.app/): a full program that runs in the browser. Its engine is deterministic and the same functions are exposed as tools, so an agent can compute exactly what the app shows. ## Use it - Landing page: https://paperwell.usefulweb.app/ - Workspace (browser app): https://paperwell.usefulweb.app/app - open a project with https://paperwell.usefulweb.app/app#project= or a template with https://paperwell.usefulweb.app/app#template= - Project file format (JSON Schema): https://paperwell.usefulweb.app/project.schema.json - Tutorials: https://paperwell.usefulweb.app/tutorials - JSON API: POST https://paperwell.usefulweb.app/api/v1/tools//calculate (catalog: https://paperwell.usefulweb.app/api/v1/tools) - OpenAPI: https://paperwell.usefulweb.app/openapi.json - MCP (Streamable HTTP): https://paperwell.usefulweb.app/mcp ## Engine tools - [Paperwell Contract Notice Deadlines](https://paperwellnoticedeadlines.usefulweb.app/): Last day to cancel a contract: terms, renewals and notice deadlines, with a calendar file. API: POST https://paperwell.usefulweb.app/api/v1/tools/paperwell-notice-deadlines/calculate · MCP tool `paperwell_notice_deadlines` - [Paperwell PDF Page Planner](https://paperwellpageplan.usefulweb.app/): Plan a PDF merge, split, reorder, removal or rotation and see every resulting page first. API: POST https://paperwell.usefulweb.app/api/v1/tools/paperwell-page-plan/calculate · MCP tool `paperwell_page_plan` - [Paperwell Document Text & Data Scan](https://paperwelldocumentscan.usefulweb.app/): Full text of a PDF, DOCX or scan plus identifiers, personal data, dates and amounts in it. API: POST https://paperwell.usefulweb.app/api/v1/tools/paperwell-document-scan/calculate · MCP tool `paperwell_document_scan` - [Office to PDF Converter](https://officetopdfconverter.usefulweb.app/): Convert Word, Excel, PowerPoint, OpenDocument, RTF and CSV files to PDF with LibreOffice. API: POST https://paperwell.usefulweb.app/api/v1/tools/office-to-pdf-converter/calculate · MCP tool `office_to_pdf_converter` - [PDF ↔ Image Converter](https://pdfimageconverter.usefulweb.app/): Turn PDF pages into PNG or JPG images, or combine images into a PDF without quality loss. API: POST https://paperwell.usefulweb.app/api/v1/tools/pdf-image-converter/calculate · MCP tool `pdf_image_converter` - [PDF Compressor](https://pdfcompressor.usefulweb.app/): Make PDFs smaller with Ghostscript presets or custom image DPI and JPEG quality, with previews. API: POST https://paperwell.usefulweb.app/api/v1/tools/pdf-compressor/calculate · MCP tool `pdf_compressor` - [PDF Form & Signature Studio](https://pdfformsignaturestudio.usefulweb.app/): List and fill PDF form fields, and place a visible signature image or typed name on a page. API: POST https://paperwell.usefulweb.app/api/v1/tools/pdf-form-signature-studio/calculate · MCP tool `pdf_form_signature_studio` - [PDF Merge, Split & Reorder](https://pdfmergesplitreorder.usefulweb.app/): Merge PDFs, split by page count or ranges, and reorder, remove, rotate or duplicate pages. API: POST https://paperwell.usefulweb.app/api/v1/tools/pdf-merge-split-reorder/calculate · MCP tool `pdf_merge_split_reorder` - [Searchable PDF OCR](https://searchablepdfocr.usefulweb.app/): Make scanned PDFs searchable and copyable with OCRmyPDF and Tesseract, optionally as PDF/A. API: POST https://paperwell.usefulweb.app/api/v1/tools/searchable-pdf-ocr/calculate · MCP tool `searchable_pdf_ocr` - [Secure PDF Redactor](https://securepdfredactor.usefulweb.app/): Black out names, numbers or areas in a PDF for real: the text is removed, not just covered. API: POST https://paperwell.usefulweb.app/api/v1/tools/secure-pdf-redactor/calculate · MCP tool `secure_pdf_redactor` - [Form Translator](https://formtranslator.usefulweb.app/): Plain-language help for confusing forms: field-by-field hints and jargon explained. API: POST https://paperwell.usefulweb.app/api/v1/tools/form-translator/calculate · MCP tool `form_translator` - [Privacy Policy Decoder](https://privacypolicydecoder.usefulweb.app/): What a privacy policy says it collects, shares, sells and keeps — with quoted evidence. API: POST https://paperwell.usefulweb.app/api/v1/tools/privacy-policy-decoder/calculate · MCP tool `privacy_policy_decoder` - [Before You Sign](https://beforeyousign.usefulweb.app/): Spot risky contract clauses (renewal, notice, liability, non-compete…) before you sign. API: POST https://paperwell.usefulweb.app/api/v1/tools/before-you-sign/calculate · MCP tool `before_you_sign` - [What Changed in This Law?](https://whatchangedinthislaw.usefulweb.app/): Compare two versions of a law or regulation section by section, with changed numbers and deadlines. API: POST https://paperwell.usefulweb.app/api/v1/tools/what-changed-in-this-law/calculate · MCP tool `what_changed_in_this_law` - [The Compatibility Engine](https://compatibilityengine.usefulweb.app/): Will this charger, cable, version or PC part work together? Rule-based checks with margins. API: POST https://paperwell.usefulweb.app/api/v1/tools/compatibility-engine/calculate · MCP tool `compatibility_engine` - [Accessibility Fixer](https://accessibilityfixer.usefulweb.app/): Turn WCAG 2.2 problems in your HTML into concrete code fixes, grouped by effort. API: POST https://paperwell.usefulweb.app/api/v1/tools/accessibility-fixer/calculate · MCP tool `accessibility_fixer` - [Screenshot to Steps](https://screenshottosteps.usefulweb.app/): Turn a screenshot of an app or website into numbered steps for what you want to do. API: POST https://paperwell.usefulweb.app/api/v1/tools/screenshot-to-steps/calculate · MCP tool `screenshot_to_steps` - [File Format Doctor](https://fileformatdoctor.usefulweb.app/): Find out what a file really is from its bytes, why it will not open and how to convert it. API: POST https://paperwell.usefulweb.app/api/v1/tools/file-format-doctor/calculate · MCP tool `file_format_doctor` - [CiteShape](https://citeshape.usefulweb.app/): Paste a DOI, ORCID iD, ISBN or arXiv ID: validated, resolved, and formatted as APA, BibTeX and RIS. API: POST https://paperwell.usefulweb.app/api/v1/tools/citeshape/calculate · MCP tool `citeshape` - [Safe Markdown Preview](https://safemarkdownpreview.usefulweb.app/): Render Markdown with GFM tables and footnotes to sanitised HTML and see what was removed. API: POST https://paperwell.usefulweb.app/api/v1/tools/safe-markdown-preview/calculate · MCP tool `safe_markdown_preview` ## Formats - Import: PDF, Images (PNG, JPG, TIFF, GIF, WebP), Office documents (DOCX, DOC, ODT, RTF, XLSX, PPTX, CSV …), Text, Markdown and HTML, Paperwell project (.paperwell.json, with or without embedded files), Project link (#project=…) - Export: Every tool output (PDF, images, ZIP), Paperwell project (.paperwell.json) and bundle with files, Printable report (PDF via print), Findings and runs (CSV), Deadlines (.ics calendar), Notes and report (Markdown), Findings chart (SVG/PNG), Document text (TXT) ## Limits - PDF pages are not rendered in the browser: page previews come from the tools (the first page of a result) and page counts are read from the PDF structure, which can fail for unusual files. - Tool output (summaries, clause labels, warnings) is written by the site tools in English and is translated only where a translation exists. - The contract, policy, form and law readers are rule-based pattern matchers for English and German texts; they quote what they found but cannot guarantee completeness. - Text extraction reads the text layer of PDFs; scanned PDFs need OCR first, and OCR quality depends on the scan. - Uploads per tool run are limited (most PDF tools 100 MB, text readers 5 MB, document scan 10 MB) and file tools allow only a few runs per minute. - Project files embed documents only when you choose “Save with documents”; share links and Drive saves contain texts and results but not the binary files. - Deadlines ignore public holidays and the way notice must be delivered; reminders work only in the calendar you import the .ics file into. - Signatures are images or handwriting-style text stamps, not qualified electronic signatures. - Evidence excerpts and page numbers are typed by you and not verified; jumping to a PDF page needs a browser PDF viewer that supports page links (#page=) and allowed pop-ups.