Ultimate PDF Studio
40 professional client-side PDF engines for all document requirements. Your files are never uploaded to any server; everything processes 100% locally with encrypted zero-knowledge privacy.
Merge PDF
Combine multiple PDF documents into a single unified file with custom order.
Split PDF
Separate PDF into individual pages or split by custom page ranges.
Compress PDF
Reduce file size up to 90% while preserving text readability and visual clarity.
Edit PDF (Text & Stamp)
Stamp custom text annotations, approvals, and headers directly onto PDF pages.
Sign & Stamp PDF
Draw your digital signature with mouse or touch, place it precisely on any page.
Create Blank / Rich PDF
Compose a fresh professional PDF document from scratch with title, body, and styling.
PDF to Images
Convert PDF pages into high-resolution JPG or PNG images bundled in a ZIP.
Images to PDF
Bundle multiple photos, screenshots, or artwork into a single unified PDF.
Reorder Pages
Visually reorder PDF pages using live thumbnail cards with directional buttons.
Delete Pages
Select unwanted pages visually to remove them permanently from the document.
Extract Pages
Extract selected pages into an independent brand-new PDF file.
Rotate Pages
Rotate portrait/landscape pages by 90°, 180°, or 270° degrees.
Crop Margins
Trim unnecessary margins to focus reader attention strictly on content.
Halve Book Pages
Split double-page book or magazine scans into two separate individual pages.
Pages Per Sheet (N-Up)
Place 2 or 4 pages side-by-side on a single printed sheet to save paper.
Standardize Page Size
Standardize mixed-dimension PDF pages into uniform A4, A3, or Letter dimensions.
Add Page Numbers
Insert dynamic page numbering headers or footers with custom styling.
Add Watermark
Stamp proprietary text or transparent logo watermarks across every page.
Bookmark & Table of Contents
Inject clean section bookmarks and a dedicated Table of Contents page.
Extract Embedded Images
Extract all full-resolution graphics and photos from PDF pages into a ZIP.
PDF to Text
Extract clean digital text stream instantly without waiting for OCR models.
PDF to Word
Convert PDF content and formatting into an editable Word document.
Word / Text to PDF
Convert .docx and text files directly into clean, standardized PDF pages.
PDF to Excel
Detect tabular structures in PDF and export cleanly into structured Excel spreadsheets.
Excel to PDF
Convert .xlsx and .csv spreadsheet sheets into styled, printable PDF tables.
PDF to PowerPoint
Convert each PDF page into a presentation slide in true .pptx format.
Markdown to PDF
Render markdown headings, lists, and code blocks into an elegant formatted PDF.
Webpage / HTML to PDF
Convert HTML documents and web content into clean formatted PDF pages.
Copy Text & Data
Extract paragraphs and tabular rows from PDF for instant one-click clipboard copying.
Encrypt & Protect
Secure your document with password encryption and usage permission restrictions.
Unlock & Decrypt
Remove password protection from a PDF when the credentials are provided.
Redact Sensitive Data
Permanently mask sensitive areas with opaque black redaction blocks.
Strip All Metadata
Purge author, application, device, and timestamp metadata for absolute privacy.
Flatten PDF Layers
Lock fillable forms, annotations, and layers into static uneditable graphics.
PDF Viewer & Inspector
Inspect PDF pages at full native resolution with integrated browser page controls.
PDF OCR Engine
Recognize scanned documents with AI OCR engine and inject a searchable text layer.
Search Inside PDF
Search keywords or regex across PDF pages to generate an occurrence findings report.
Repair Corrupted PDF
Rebuild corrupted PDF xref tables and stream dictionaries to restore unreadable files.
Compare Two PDFs
Compare two documents side-by-side to identify structural and textual discrepancies.
Rasterize PDF Pages
Convert pages strictly into flattened bitmap pixels to prevent copy-paste tampering.
Convert to PDF/A Archive
Standardize document metadata into ISO 19005 compliant long-term archival format.
Create Professional Invoice
Generate structured corporate proforma invoice PDFs with automatic tax calculation.
What can online PDF tools do?
PDF tools let you merge, split, compress, watermark and password-protect PDF files from one place. The Monolith Works PDF suite performs every operation inside your browser, so confidential documents such as contracts, quotes and reports are never uploaded to a server.
How to use it
- 1Pick the operation you need (merge, split, compress, watermark, protect).
- 2Load your PDF file or files.
- 3Set the options for that operation (page range, watermark text, password).
- 4Download the result.
Frequently asked questions
Is the password protection real encryption?
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Yes. Protection applies genuine encryption through the PDF Standard Security Handler, so the password is required to open the file. It is not a metadata change. There is no way to recover a file whose password is lost, so store it somewhere safe.
How much quality does compression cost?
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Compression reduces size by rasterising and re-encoding pages. On text-heavy documents the loss is invisible; on catalogues full of high-resolution photography you may see visible softening. Check the output before you rely on it.
Do my documents stay private?
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Yes. Every PDF operation runs in your browser and the file never leaves your device. The leak risk that comes with uploading contracts, financial statements or client proposals to an online service simply does not exist here.