File conversion guides
Image & PDF Guides for Real Conversion Problems
Learn which format to choose, how to solve compatibility problems, and how to complete common image and PDF workflows before opening the matching FileOnTap tool.
How to Compress Images to a Target File Size
Set a byte budget, preserve the right format, and verify the actual result instead of assuming a slider guarantees an upload limit.
Image workflowWhy Image Compression Misses a Target Size
Diagnose genuine target misses: encoding overhead, format constraints, detail, dimensions and upload rules can conflict.
Image workflowHow to Resize Images Without Stretching
Choose proportional fit, center crop or padding to control framing without distorting the subject.
Image workflowPrepare Images for Upload Forms: Pixels, Format and KB
A practical verification order for forms that combine pixel dimensions, file formats and strict byte limits.
HEIC format comparisonHEIC vs PNG: Quality, File Size and Compatibility
Compare compression, metadata, color and practical reasons to keep HEIC or create PNG copies.
iPhone HEIC guideHow to Convert HEIC to PNG on iPhone
Use Preview, Safari, or Shortcuts to create a real PNG copy of an iPhone HEIC photo.
Mac HEIC guideHow to Convert HEIC to PNG on Mac
Use Preview for a built-in export or convert a HEIC file locally in your browser.
Windows HEIC guideHow to Convert HEIC to PNG on Windows 10 & 11
Convert in the browser without codecs or add Windows HEIF support and save a PNG locally.
Image format comparisonJPG vs PNG: What's the Difference?
Compare photos, screenshots, transparency, file size, image quality, and when to use each format.
Mac PDF guideHow to Combine PDF Files on Mac
Use Preview for page-level control or merge complete PDFs locally in your browser.
Windows HEIC guideHow to Open HEIC Files on Windows 10 & 11
Understand Windows HEIC compatibility and when converting to JPG is the practical fix.
HEIC format basicsWhat Is HEIC? What Is a HEIC File?
Learn why iPhones use HEIC, what the format stores, and where compatibility can be a problem.
HEIC format comparisonHEIC vs JPG (JPEG)
Compare storage efficiency, compatibility, image quality, and everyday sharing workflows.
Private file conversionOnline File Converters Without Uploads: How to Choose
Compare browser-local, cloud-upload and desktop methods; learn how to check whether your files leave your device.
Image format comparisonWebP vs JPG: Which Should You Use?
Compare quality, file size, transparency, compatibility, and photo or website workflows.
Guides should lead to a useful tool
FileOnTap guides focus on questions that connect to an existing workflow. Compare JPG and PNG, work with HEIC, or browse the PDF tools when you are ready to act.
Supported conversion and PDF operations run locally in the browser, so file contents do not need to be uploaded to a FileOnTap conversion server.