Dalto
Founder & Developer — DCOUTLIER
Dalto is the founder of DCOUTLIER and creator of DCPIXEL. He specializes in browser performance, WebAssembly, and privacy-first web development.
@dc.outlierAreas of Expertise
Articles by Dalto (50)
How to Compress a PDF Without Losing Quality
Learn the difference between lossy and lossless compression, and how our WebAssembly tech drastically shrinks your PDF sizes directly in the browser.
March 1, 2026 · 18 min readThe Ultimate YouTube Thumbnail Size Guide for 2026
Stop getting your thumbnails cropped automatically by YouTube. Learn the exact 16:9 pixel layouts required to maximize your CTR.
February 24, 2026 · 15 min readWhy Client-Side Processing is the Future of LGPD Compliance
Uploading sensitive documents to cloud services like iLovePDF exposes you to data breaches. Discover how DCPIXEL's ZERO data collection architecture keeps you safe.
February 15, 2026 · 22 min readPNG to PDF: The Complete 2026 Conversion Guide
Why PNG files are perfect for quality but terrible for sharing. Master the conversion to PDF and learn how to preserve transparency and color accuracy.
April 10, 2026 · 12 min readInstagram Reels Size & Dimensions Guide 2026: The Full Breakdown
Upload crispy, uncompressed Instagram Reels. The exact 1080x1920 pixel format, file size limits, and how DCPIXEL auto-crops your covers perfectly.
April 5, 2026 · 10 min readHow to Compress Images for Maximum Web Performance in 2026
Uncompressed images are the #1 cause of slow websites and failed Core Web Vitals. Learn the exact compression workflow to score 95+ on PageSpeed Insights.
March 28, 2026 · 14 min readWebP to PDF: Why You Need This Conversion and How to Do It Right
WebP is great for web performance, but legacy systems reject it. Learn when and why to convert WebP to PDF, and how to do it without losing quality.
March 20, 2026 · 9 min readHow to Compress a JPG to 100KB or Less (Without Quality Loss)
Government portals, job applications, and academic platforms often require images under 100KB. Here is the exact technique to hit that target without a blurry result.
March 15, 2026 · 11 min readHow to Convert HEIC to JPG on Any Device (Complete iPhone Photo Guide)
iPhone photos in HEIC format are half the size of JPG but incompatible with most apps. Learn how to convert them instantly, without installing anything.
June 2, 2026 · 9 min readWebP vs JPG vs PNG: Best Image Format for Web in 2026
Choosing the wrong image format costs you Core Web Vitals points and PageSpeed score. Here is the definitive comparison of WebP, JPG, and PNG for web developers in 2026.
May 28, 2026 · 11 min readHow to Create a QR Code (URLs, WiFi, Contact Cards)
QR codes link the physical and digital world. Learn how to generate QR codes for websites, Wi-Fi networks, phone numbers, and vCards with DCPixel PRO — no watermark, no expiry.
May 20, 2026 · 8 min readSocial Media Image Sizes 2026: The Complete Guide (Instagram, YouTube, LinkedIn, TikTok)
Every social platform has different image dimension requirements. Using the wrong size means cropped posts, blurry previews, and lower reach. Here are the exact specs for 2026.
May 12, 2026 · 13 min readHow to Remove a Background from a Photo with AI (No Green Screen Needed)
On-device AI can cut out any subject from any photo in seconds — no green screen, no manual masking. Here is how it works and when it beats a human-edited cutout.
July 8, 2026 · 10 min readAI Image Upscaling Explained: How to Enlarge a Photo Without Blur
Stretching a small image in Photoshop makes it blurry. AI super-resolution reconstructs the missing detail instead of just stretching pixels. Here is how — and when it actually helps.
July 15, 2026 · 9 min readHow to Sign a PDF Online (Without Printing, Scanning, or Uploading)
Draw, type, or upload a signature and place it exactly where you need it — directly in your browser. Here is when a simple drawn signature is enough, and when you need a certified e-signature instead.
July 22, 2026 · 11 min readHow to Redact a PDF (Permanently Black Out Sensitive Information)
A black rectangle drawn on top of text is not redaction — the original text is still there underneath, extractable with copy-paste. Here is how real redaction works, and why doing it locally matters.
July 29, 2026 · 10 min readDocument Privacy for Lawyers: Why Uploading Client Files to "Free PDF Tools" Is a Confidentiality Risk
Merging, redacting, or signing a client document on a random online tool means a third party sees it first. Here is what that means for attorney-client privilege, and how to avoid it entirely.
August 5, 2026 · 12 min readHandling Resumes and Candidate Data Privately: A Privacy Checklist for HR and Recruiters
Resumes are packed with personal data — addresses, phone numbers, sometimes photos and dates of birth. Here is how to compress, convert, and clean them up without routing candidate PII through a random server.
August 12, 2026 · 10 min readThe Complete Guide to Photo and PDF Tools for iPhone Users
HEIC files, huge Live Photos, and PDFs you cannot easily edit on iOS — here is the full toolkit for handling iPhone photos and documents without installing a single app.
August 19, 2026 · 10 min readThe Complete Guide to Photo and PDF Tools for Android Users
Android’s fragmented file-sharing behavior across manufacturers means photo and PDF headaches look a little different than on iPhone. Here is the full browser-based toolkit that works on any Android phone.
August 26, 2026 · 9 min readDCPIXEL vs iLovePDF: Which Should You Use in 2026?
iLovePDF is one of the most popular PDF tool sites on the web. Here is an honest, structural comparison — what it does well, and where a browser-based, no-upload architecture changes the equation.
September 2, 2026 · 11 min readDCPIXEL vs Smallpdf: An Honest Comparison for 2026
Smallpdf is known for a clean interface and business-focused document workflows. Here is how it actually compares to a browser-based, zero-upload alternative.
September 9, 2026 · 10 min readDCPIXEL vs TinyPNG: Which Image Compressor Should You Use?
TinyPNG is a well-known, developer-favorite image compression API and web tool. Here is how it compares to a browser-based compressor that never uploads your images at all.
September 16, 2026 · 9 min readDCPIXEL vs Adobe Acrobat Online: Do You Need the Industry Standard?
Adobe practically invented the PDF format. Its online tools carry that authority — and that price tag. Here is when Acrobat is worth it, and when a browser-based alternative covers the same task for free.
September 23, 2026 · 10 min readPDF to Word: How to Convert a PDF to an Editable Word Document
A PDF is meant to be final — but sometimes you need to actually edit the text. Here is how PDF to Word conversion works, what breaks in the process, and how to get a clean result.
September 30, 2026 · 10 min readJPG to PDF: How to Convert Photos and Scans Into a PDF Document
Turning one or several JPG photos into a single, shareable PDF is one of the most common file tasks there is. Here is how to do it properly, including multi-page documents.
October 7, 2026 · 8 min readPDF to JPG: How to Convert PDF Pages Into Images
Need to drop a PDF page into a presentation, post it on social media, or just view it as an image? Here is how PDF to JPG conversion works, page by page.
October 14, 2026 · 8 min readWord to PDF: How to Convert a Document Without Losing Formatting
Sending a .docx file risks it looking different on the recipient's computer. Converting to PDF locks in the formatting exactly as you see it. Here is how to do it right.
October 21, 2026 · 8 min readHow to Merge (Combine) Multiple PDF Files Into One Document
Combining several PDFs into a single file is one of the most-searched PDF tasks there is. Here is how to do it, in the right order, without installing any software.
October 28, 2026 · 8 min readPDF to Excel: How to Extract Tables From a PDF Into a Spreadsheet
A table trapped inside a PDF is nearly unusable for analysis. Here is how PDF to Excel conversion pulls that data back into rows and columns you can actually work with.
November 4, 2026 · 9 min readExcel to PDF: How to Convert a Spreadsheet Without Breaking the Layout
Sharing a raw .xlsx file risks columns shifting or formulas being edited by mistake. Converting to PDF locks the report exactly as designed. Here is how to do it cleanly.
November 11, 2026 · 8 min readPNG to JPG: When and How to Convert (Free & Unlimited)
PNG files are often far larger than they need to be for photos. Converting to JPG can shrink file size dramatically — here is when that trade-off makes sense, and how to do it.
November 18, 2026 · 8 min readPDF to PNG: How to Export PDF Pages as Lossless Images
When a PDF page needs to become an image with perfectly sharp text or a transparent background, PNG beats JPG. Here is when to choose it and how the conversion works.
November 25, 2026 · 7 min readPowerPoint to PDF: How to Share Slides Without Risking the Formatting
A .pptx file can look completely different on someone else's computer if they're missing a font or have a different PowerPoint version. Converting to PDF avoids that entirely.
December 2, 2026 · 7 min readPDF to PowerPoint: How to Turn a PDF Back Into Editable Slides
Received a deck as a PDF but need to actually edit the slides? Here is how PDF to PowerPoint conversion reconstructs an editable .pptx, and where it works best.
December 9, 2026 · 7 min readJPG to PNG: When You Need Lossless Quality or Transparency
Converting JPG to PNG won't undo compression that already happened — but it is the right move before further editing, or when you need to add transparency. Here is when and how.
December 16, 2026 · 7 min readHow to Unlock a Password-Protected PDF (When You Have the Right To)
Forgot the password on your own PDF, or need to remove a restriction from a document you have permission to access? Here is how PDF unlocking works.
December 23, 2026 · 8 min readHow to Password-Protect a PDF Before Sending It
Adding a password to a PDF is the simplest way to make sure only the intended recipient can open it. Here is how encryption works and how to set it up correctly.
December 30, 2026 · 8 min readHow to Split a PDF Into Separate Files or Pages
Sometimes you need one chapter, not the whole book. Here is how to pull specific pages out of a PDF, or divide a large document into smaller files.
January 6, 2027 · 7 min readHow to Compare Two PDF Files and Spot What Changed
Two contract drafts, two invoice versions, two policy documents — comparing them page by page manually is slow and error-prone. Here is how to automate it.
January 13, 2027 · 7 min readPDF OCR: How to Make a Scanned Document Searchable
A scanned PDF is just a picture of text — you can't search it, select it, or copy it. Here is how OCR adds a real, invisible text layer underneath.
January 20, 2027 · 9 min readHow to Resize an Image to Exact Pixel Dimensions
Whether it is a website asset, an app icon, or a print requirement, resizing an image correctly means understanding aspect ratio, not just typing new numbers.
January 27, 2027 · 8 min readHow to Crop an Image to an Exact Size or Ratio
Cropping removes what you don't need and keeps what you do — the key is choosing the right ratio for where the image is actually going.
February 3, 2027 · 7 min readHow to Rotate or Flip an Image (and When to Use Each)
A sideways photo needs rotating. A selfie that looks off needs flipping. They solve different problems — here is how each works and when to reach for it.
February 10, 2027 · 6 min readHow to Create a Favicon for Your Website (All Sizes at Once)
A favicon needs to exist in ten different pixel sizes to work correctly across browsers, devices, and PWA install prompts. Here is how to generate all of them from one image.
February 17, 2027 · 7 min readHow to Add a Watermark to Your Photos
A visible watermark discourages casual reuse of your images without permission. Here is how to add one that's noticeable but doesn't ruin the photo.
February 24, 2027 · 7 min readHow to Remove Metadata (EXIF/GPS) From a Photo Before Sharing
Every photo from a phone or camera carries hidden data — including, often, the exact GPS coordinates of where it was taken. Here is how to strip it before you post.
March 3, 2027 · 8 min readHow to Make a Photo Collage Online (No App Required)
Combining several photos into one clean grid layout used to mean a dedicated app. Here is how to do it directly in your browser, with full control over layout and spacing.
March 10, 2027 · 7 min readID and Passport Photo Sizes: A Country-by-Country Guide
Passport photo requirements vary sharply by country — wrong dimensions or the wrong background color is one of the most common reasons an application gets rejected.
March 17, 2027 · 8 min readHow to Make a GIF From a Series of Images
A GIF is just a sequence of images played back in a loop. Here is how to combine your own photos into one, with control over timing and size.
March 24, 2027 · 7 min read