Quick Start
Welcome to PDFLean. With 114+ professional PDF utilities, local tools execute inside your browser’s private memory sandbox — keeping your sensitive files on your device. Heavier tools are labeled Cloud and use our encrypted servers with short retention; each tool’s mode is clearly marked before you start. Five tools cover the most common document tasks — each opens its own dedicated page and runs in your browser with no account needed: Merge PDF files · Split a PDF · Batch-process images · Linearize a PDF (Fast Web View) · Compress a PDF.
Pick a Tool by Task
Section titled “Pick a Tool by Task”Most documents arrive with a job attached. These six groups match the job to the right tools — follow the one that sounds like yours.
Before you send it. Shrink an attachment so it clears a size limit, keep the first page rendering fast, and lock the form fields in place: compress a PDF (runs in your browser — no upload, free), linearize a PDF (Fast Web View) (local by default, free; an optional encrypted cloud pass handles very heavy files and uses plan quota), and flatten a PDF (in your browser, free). Full scenario guide: Compress a PDF for Email.
Sign and return. Read the contract first, fill the blanks, then apply a qualified signature: open a PDF in your browser (nothing uploaded, free) to check every page before you commit; fill a PDF form (in your browser, free); sign a PDF with a digital certificate runs PAdES signing on the encrypted cloud path and uses plan quota. Full scenario guide: Sign a Contract and Return It.
Invoices and financial documents. Turn statements into spreadsheets, stamp traceable numbers across a packet, and split a bundled PDF at each invoice boundary: convert PDF to Excel (in your browser, free), add Bates numbering to a PDF (in your browser, free), and split a PDF by text (in your browser, free). Full scenario guide: Archive a Year of Invoices.
Scan and archive. Make scanned pages searchable, clean up mobile captures, and store the result in the archival format: OCR a PDF (on-device recognition, free, no upload), enhance a scanned document (in your browser, free), and convert a PDF to PDF/A (in your browser, free). Full scenario guide: Build a Searchable Archive.
Forms and collection. Build the form once, then let respondents fill it without installing anything: create a fillable PDF form (in your browser, free) and fill a PDF form (in your browser, free). Full scenario guide: Collect Signed Consents.
Share privately and compliantly. Remove the sensitive content for real, find it automatically first, then control who can open the result: redact a PDF deletes matched text from the content stream locally — free, no upload — with an optional cloud pass; detect PII automatically recognizes emails, ID numbers, and similar patterns in your browser — free — with an optional server-side step that uses quota; password-protect a PDF (in your browser, free). Full scenario guide: Prepare a Filing for Public Disclosure.
The linked tool pages each carry the same first-mention processing and pricing note you see here.
Common Entry Points
Section titled “Common Entry Points”- All Tools: Browse our 114+ online utilities categorized by workflow
- Automated Pipeline: Chain multiple tools sequentially (e.g. merge, compress, watermark, protect in one run)
- Security Whitepaper: In-depth review of our local sandbox, short-retention model, and encryption practices
- Pricing & Plans: Free access to local tools (fair-use quota); Pro and Premium unlock cloud acceleration for heavy files
Processing Architecture & Tiers
Section titled “Processing Architecture & Tiers”| Tier | Execution Model | Typical Operations | Sign-in Requirement |
|---|---|---|---|
| Local Sandbox (T0) | Pure client-side WebAssembly | Merge, Split, Page Reorder, Compression, Basic Convert, Watermark | No sign-in required |
| Cloud Accelerated (T1) | Encrypted cloud processing | PAdES digital signing, PDF/A validation, URL-to-PDF, NLP-based PII detection, layout-aware extraction | Free account (daily & monthly quota) |
| Priority Cloud (T2) | Higher-capacity cloud lane | Large files, bulk batch pipelines, priority queuing (caps per pricing matrix) | Pro or Premium subscription |
Engineering & Compliance Standards
Section titled “Engineering & Compliance Standards”PDFLean is built strictly to open web standards and complies with international specifications including ISO 32000-1 (PDF) and ISO 19005 (PDF/A) for long-term document preservation.
Deep Reading
Section titled “Deep Reading”- Redact an SSN From a PDF — why a black box is not redaction, and how to verify the text is really gone
- Compress a PDF Without Uploading It — the structural-compression walkthrough and its honest limits
- Is an Online PDF Converter Safe? — how to evaluate a converter site before you upload anything
- Linearized PDF — the term behind the streaming-load behavior of large PDFs