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The DCPIXEL Blog

Insights, tutorials, and news about image processing, PDF management, and digital privacy.

JSON Formatter and Validator online tool guide — DCPIXEL
JSONDeveloper ToolsWeb DevelopmentDebugging

JSON Formatter & Validator: The Complete Online Guide

Format, validate, and minify JSON payloads online. Learn how to spot syntax errors, pretty-print nested API responses, and keep credentials secure.

Dalto September 1, 202612 min read
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How to make a GIF from images — DCPIXEL guide
GIFImage EditingTutorial

How 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.

Dalto August 17, 20267 min read
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ID and passport photo size guide by country — DCPIXEL
Image EditingTutorial

ID 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.

Dalto August 16, 20268 min read
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How to make a photo collage online — DCPIXEL guide
Image EditingTutorial

How 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.

Dalto August 15, 20267 min read
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How to remove EXIF metadata and GPS data from photos — DCPIXEL guide
PrivacyTutorial

How 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.

Dalto August 14, 20268 min read
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How to add a watermark to photos — DCPIXEL guide
Image EditingTutorial

How 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.

Dalto August 13, 20267 min read
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Resume and candidate data privacy for HR and recruiters — DCPIXEL guide
HRPrivacyRecruitingPDF

Handling 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.

Dalto August 12, 202610 min read
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How to create a favicon for your website — DCPIXEL guide
Developer ToolsTutorial

How 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.

Dalto August 12, 20267 min read
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How to rotate or flip an image online — DCPIXEL guide
Image EditingTutorial

How 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.

Dalto August 11, 20266 min read
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How to crop an image online — DCPIXEL guide
Image EditingTutorial

How 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.

Dalto August 10, 20267 min read
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How to resize an image online — DCPIXEL guide
Image EditingTutorial

How 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.

Dalto August 9, 20268 min read
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PDF OCR guide — make a scanned document searchable — DCPIXEL
PDFOCRTutorial

PDF 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.

Dalto August 8, 20269 min read
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