Guides
Practical articles for choosing image formats, planning PDF work, and avoiding common conversion mistakes before you start.
30 guides published
How to choose an image format
Understand when to use JPG, PNG, WebP, or HEIC based on file size, compatibility, transparency, and editing needs.
JPG vs PNG
Compare JPG and PNG for photos, screenshots, transparency, file size, and editing workflows.
PNG vs WebP
See when PNG is better for source graphics and when WebP is better for lighter web delivery.
How to choose the right PDF tool
Learn when to merge, split, convert, clean up, or optimize PDFs depending on the task in front of you.
When to convert HEIC to JPG
Learn when HEIC is fine to keep and when converting to JPG is the safer move for uploads and sharing.
How to compress images without ruining quality
Learn how format choice, dimensions, and compression work together when you want smaller images without obvious damage.
When to convert PDF to JPG
Understand when PDF pages are better as JPG images and when the original PDF should stay intact.
How to resize images for the web
Learn how width, height, display context, and file weight work together when preparing images for web publishing.
When to merge a PDF and when to split it
Understand when to combine PDFs into one file and when to split a file into smaller, more targeted documents.
How to choose the best image format for the web
Learn how JPG, PNG, and WebP fit different web publishing needs when you care about both speed and quality.
How to remove unwanted pages from a PDF
Learn when page removal is the right PDF cleanup step and how it differs from splitting a file.
How to prepare images before upload
Check format, size, dimensions, and image quality in the right order before uploading or sending images.
How to turn iPhone photos into a submission PDF
Convert HEIC photos to JPG, clean them up if needed, and combine them into a readable PDF.
Parquet vs CSV for AWS, BigQuery, and Spark
How Parquet reduces costs on AWS Athena and BigQuery, when to stick with CSV, and browser-based conversion tools that require no setup.
How to optimize blog and website images
Resize, convert, and compress website images while keeping a good balance between loading speed and appearance.
Why HEIC files won't open on Windows (and how to fix it)
Why iPhone photos (HEIC) fail to open on Windows, and the fastest ways to fix it.
How to email photos that are too large to send
Practical steps to get oversized photos under email attachment limits while keeping them sharp.
PDF too large to upload? How to get under the size limit
How to shrink an oversized PDF below upload limits while keeping the document readable.
What is WebP? How to open it and convert to JPG or PNG
Why saved images end up as WebP, and how to convert them to JPG or PNG when needed.
Convert and compress images on your phone (no app needed)
How to convert and compress images directly in your phone's browser, without installing apps.
JPG vs JPEG: why there are two extensions for the same format
JPG and JPEG are the same format — here's why both extensions exist and when it matters.
How to combine screenshots into one PDF (Windows, Mac, mobile)
Turn multiple screenshots into a single, ordered PDF for reports and sharing — all in the browser.
Getting an application photo to the required size and format
How to meet the format, pixel-size, and file-size rules for online application photos.
What is TIFF? How to open .tif files and convert them to JPG or PNG
What the TIFF format is for, and how to convert scans and print files to JPG or PNG.
Better marketplace listing photos: size, light, and format
Square-crop, brighten, and size your listing photos so they stand out in marketplace feeds.
PNG transparency basics: why JPG fills it in and how to keep it
Why PNG transparency disappears in JPG, and how to keep it while making files smaller.
How to fix CSV mojibake (garbled text): Excel, UTF-8, and Shift_JIS
Why CSVs come out garbled in Excel (UTF-8 vs Shift_JIS) and how to fix it on the spot.
What is Parquet? How it differs from CSV and when to use it
What the columnar Parquet format is, and how it differs from CSV — explained simply.
JSON vs CSV: the difference, and which to store your data in
Table-shaped CSV vs nesting-friendly JSON — the differences and how to convert between them.
What is AVIF? Opening .avif files and converting to JPG or PNG
What the high-compression AVIF format is, and how to convert it to JPG or PNG.