SwitchPDF Blog

Practical guides on PDF compression, conversion, and developer document workflows — written for people who actually do this work.

Developer 4 min read

UUID v4 vs v7: Which One to Use as a Database Key

Random UUIDs fragment your index. v7 fixes it by putting a timestamp at the front. Here is the trade-off.

August 18, 2026Read article

Security 4 min read

Reading a JWT Without a Library (And Why You Shouldn't Trust It)

A JWT is three Base64 chunks joined by dots. Anyone can read one — which is exactly why decoding is not verifying.

August 17, 2026Read article

Developer 4 min read

Base64 Explained: When to Use It and When Not To

Base64 is not encryption and it makes your data bigger. Here is what it is actually for.

August 16, 2026Read article

Developer 4 min read

Converting CSV to JSON Without Breaking Quoted Fields

Splitting on commas works until a value contains a comma. Here is what a real CSV parser handles that a split() does not.

August 15, 2026Read article

Developer 4 min read

Converting JSON to YAML for Kubernetes and Docker Compose

Your API speaks JSON, your infrastructure speaks YAML. Converting between them has three gotchas worth knowing about.

August 14, 2026Read article

Developer 4 min read

Why Your JSON Is Invalid: The Three Errors Behind Most Failures

Almost every "unexpected token" error comes down to three things JavaScript allows and JSON does not.

August 13, 2026Read article

Security 5 min read

Reading a Website's Security Headers (And What to Fix First)

Six HTTP headers do most of the browser-side security work. Here is what each one stops, and the order worth fixing them in.

August 12, 2026Read article

Developer 5 min read

How to Find Out What APIs a Website Uses

Every site tells you which APIs it calls — you just have to watch the right traffic. Three methods, from fastest to most thorough.

August 11, 2026Read article

Optimize 3 min read

Compressing Photo-Heavy PDFs for Maximum Size Reduction

PDFs full of photographs can shrink 70-85% with the right settings. Here's how to push compression hardest without obvious quality loss.

July 20, 2026Read article

Edit 2 min read

Fixing Upside-Down and Sideways Scanned PDF Pages

A common scanning artifact: pages come out rotated or upside-down. Here's how to fix the whole document in seconds.

July 19, 2026Read article

General 4 min read

A Brief History of the PDF Format (and Why It Won)

PDF turned 33 in 2026. Why this format outlasted competitors and where it's heading next.

July 18, 2026Read article

Convert 3 min read

Combining Multiple Word Documents Into a Single PDF

When you need to bundle a packet of Word documents into one PDF, here's the cleanest workflow.

July 17, 2026Read article

Security 4 min read

PDF Security Best Practices for Legal and Compliance Teams

A practical security checklist for handling sensitive PDFs in a small legal or compliance team.

July 16, 2026Read article

Optimize 3 min read

Sending Large PDFs Without Email Attachments

Email caps attachments at 25 MB on most providers. Here are five ways to send larger PDFs cleanly.

July 15, 2026Read article

Optimize 3 min read

Optimizing PDFs for Web Viewing and Fast First-Page Render

When a PDF is hosted on your website, the time to first visible page determines whether visitors wait or bounce. Optimization helps.

July 14, 2026Read article

Optimize 3 min read

Sending Large PDFs Over Slow Internet Connections

When uploads take hours and timeouts derail your day, here's how to shrink PDFs to manageable sizes — and what to do when they're still too big.

July 13, 2026Read article

General 3 min read

PDF vs DOCX: Which Format to Send (and Why)

PDF and Word are both standards for sharing documents. The right choice depends on what the recipient will do with it.

July 12, 2026Read article

General 4 min read

Making PDFs Accessible for Screen Readers (Without Adobe)

PDF accessibility is required by law in many contexts. Here's what makes a PDF screen-reader-friendly and how to fix common issues.

July 11, 2026Read article

Optimize 4 min read

Why Your PDF Won't Open (And How to Fix Each Cause)

Six common reasons a PDF refuses to open — with the right fix for each.

July 10, 2026Read article

Security 3 min read

Understanding (and Stripping) PDF Metadata for Privacy

Every PDF carries metadata: author name, software used, creation date, sometimes location data. Here's how to see and remove it.

July 9, 2026Read article

Security 4 min read

White-Out for Redacting PDFs: When It's Enough and When It Isn't

Drawing a white rectangle over sensitive content looks like redaction. It usually isn't safe redaction. Here's the difference.

July 8, 2026Read article

Security 4 min read

Digital PDF Signatures vs Physical Signatures: Which to Use

Drawing your signature on a touch screen looks the same as scanning a paper signature. They're legally and technically different.

July 7, 2026Read article

Edit 4 min read

Editing PDF Text in Your Browser (No Adobe Required)

You don't need Adobe Acrobat Pro to edit a PDF. Browser-based tools handle text, signatures, shapes, and white-out for free.

July 6, 2026Read article

Developer 3 min read

Writing Markdown Tables That Convert Cleanly to Word

Markdown tables look easy but break in subtle ways during conversion. Here's how to write ones that come out looking professional in Word.

July 5, 2026Read article

Developer 4 min read

Turning a README into a Client-Ready Word Document

You wrote the documentation in Markdown. The client wants .docx. Here's how to bridge the gap without losing formatting.

July 4, 2026Read article

Developer 4 min read

Generating PDF Reports from JSON Data

When you need to share API data with non-technical stakeholders, a formatted PDF table beats sending raw JSON.

July 3, 2026Read article

Developer 4 min read

Converting JSON to CSV for Google Sheets Import

A JSON-to-CSV conversion is the cleanest way to load API data into Google Sheets. Here's the workflow that handles nested objects.

July 2, 2026Read article

Convert 4 min read

When You Actually Need to Convert PDF to PDF/A

PDF/A is required by courts and archives but unnecessary for most use cases. Here's how to tell which situation you're in.

July 1, 2026Read article

Convert 3 min read

Converting a PDF Back to PowerPoint for Editing

When the original .pptx is lost but you have the exported PDF, you can get back to an editable (sort of) deck.

June 30, 2026Read article

Convert 4 min read

Converting a Web Page to PDF for Archival or Reference

Web pages disappear, change, or paywall over time. Archiving important ones as PDFs preserves them in a stable format.

June 29, 2026Read article

Optimize 3 min read

Using OCR on Scanned Receipts for Expense Reports

Manually retyping receipt data into your expense tool is slow. OCR turns receipts into copy-pasteable text in seconds.

June 28, 2026Read article

Optimize 4 min read

Repairing a PDF That Won't Open After Download

You downloaded a PDF and your viewer says "file is damaged." Don't panic — most damaged PDFs can be recovered.

June 27, 2026Read article

Organize 3 min read

Reordering Pages in a Portfolio or Application Packet

When you assembled a packet but the order isn't quite right, here's how to reorder pages visually without rebuilding from source.

June 26, 2026Read article

Organize 3 min read

Extracting Specific PDF Pages Without Sharing the Full Document

When a recipient only needs page 47 of a 200-page contract, sending the whole document is wasteful — and sometimes a privacy risk.

June 25, 2026Read article

Organize 3 min read

Removing Blank Pages from Scanned Documents

Multi-page scanners often add blank pages between sheets. Here's how to find and remove them without going through 200 pages manually.

June 24, 2026Read article

Edit 3 min read

Adding Page Numbers to a Multi-Chapter Document

When chapters need to be numbered separately or numbering needs to skip the cover, here's the right way to apply page numbers.

June 23, 2026Read article

Convert 4 min read

Converting PDF to an Editable Word Document

When the PDF arrived but you need to edit it in Word, the right conversion depends on what kind of PDF it is.

June 22, 2026Read article

Convert 4 min read

Extracting Tables from PDF to Excel: What Actually Works

PDF tables can be a nightmare to extract — but with the right source document and one tool, it's a 30-second job.

June 21, 2026Read article

Convert 3 min read

PDF to JPG: Choosing the Right DPI (72, 150, or 300)

A 72 DPI screenshot of a PDF page looks crisp on your laptop and pixelated on a high-DPI monitor. Here's how to pick the right resolution.

June 20, 2026Read article

Convert 3 min read

Converting JPG to PDF for Resume and Job Applications

You took a photo of a certificate, but the application portal only accepts PDF. Here's how to make a clean, professional PDF from a photo.

June 19, 2026Read article

Security 4 min read

AES-256 vs Older PDF Encryption: Why Modern Standards Matter

A PDF "password" from 2005 can be cracked in minutes. Modern AES-256 can't. Why this matters for your sensitive documents.

June 18, 2026Read article

Security 4 min read

Password-Protecting a PDF: Step-by-Step Guide

Adding a password to a PDF takes 30 seconds. Doing it correctly (so the password isn't trivial to crack) takes a little planning. Here's both.

June 17, 2026Read article

Edit 3 min read

Cropping PDF Margins for Cleaner Prints and Less Paper

Most scanned PDFs have unnecessary white borders that waste ink and paper when printed. Here's how to trim them in 30 seconds.

June 16, 2026Read article

Edit 4 min read

Adding a "Confidential" Watermark to Sensitive Documents

Why most watermarks are weak protection — and how to apply one that actually serves its purpose.

June 15, 2026Read article

Edit 3 min read

Rotating Individual Pages in a PDF

When only some pages in your PDF are sideways or upside-down, blanket rotation makes things worse. Here's how to rotate just the ones that need it.

June 14, 2026Read article

Convert 4 min read

Excel to PDF: Preserving Formulas, Formatting, and Print Areas

When your Excel-to-PDF conversion drops formatting or splits tables awkwardly across pages, the source spreadsheet usually needs a tweak.

June 13, 2026Read article

Convert 4 min read

Converting Multiple Word Documents to PDF in Bulk

When you have 30 contracts to PDF-ify and Microsoft Word's File → Save As is too slow, here are three faster paths.

June 12, 2026Read article

Optimize 4 min read

Why Your Scanned PDF Won't Compress (And How to Fix It)

You ran a scanned PDF through compression and got almost no size reduction. Here's why — and a 3-step workflow that actually works.

June 11, 2026Read article

Organize 4 min read

Splitting a Large PDF by Chapter or Section

When a 500-page report needs to become 12 chapter-sized PDFs, manual splitting in Preview takes hours. Here's the 5-minute approach.

June 10, 2026Read article

Organize 4 min read

How to Merge PDFs on Mac Without Adobe Acrobat

macOS has a built-in way to merge PDFs and a faster online alternative when Preview falls short. Step-by-step for both.

June 9, 2026Read article

General 7 min read

Online PDF Tools vs Desktop Software: Which Should You Use?

Adobe Acrobat costs $15+/month, free online tools are free. The real trade-off is more nuanced than price. Here's when each one is the right choice.

June 8, 2026Read article

Developer 7 min read

Markdown to Word: A Developer's Guide to Sharing Docs With Non-Developers

You write everything in Markdown. Your clients want Word docs. Here's how to bridge the gap cleanly with the right tools and a few formatting tricks.

June 7, 2026Read article

Security 6 min read

Password Protection vs Permission Restrictions: PDF Security Explained

Encrypting a PDF and disabling printing are two different things. Here's what each actually protects against and how to use them right.

June 6, 2026Read article

Organize 5 min read

Merge, Combine, Batch: Picking the Right PDF Operation

These three words get used interchangeably but mean different things in practice. Here's when each one is the right tool for the job.

June 5, 2026Read article

Optimize 6 min read

When to Use OCR on a PDF (And When Not To)

OCR turns scans into searchable text — but it's overkill for many documents. Here's how to tell whether your PDF actually needs OCR and what to expect.

June 4, 2026Read article

Developer 8 min read

Convert JSON to Excel: Three Approaches Compared

API response in JSON, stakeholder wants Excel. Three ways to do the conversion — quick online tool, command-line scripting, or building it yourself — with concrete trade-offs.

June 3, 2026Read article

Convert 7 min read

PDF/A vs Regular PDF: What's the Difference and When Do You Need It?

PDF/A is required by courts, libraries, and government archives — but most people don't know what it actually is. Here's the plain-English breakdown.

June 2, 2026Read article

Optimize 6 min read

How to Compress a PDF Without Losing Quality

A practical guide to shrinking PDFs for email and uploads — what actually gets compressed, why quality degrades, and how to pick the right setting for your file.

June 1, 2026Read article