Image Base64 not working? Check the Data URL prefix first
Distinguish a complete image Data URL from a raw Base64 payload, copy the expected form and check decoding, truncation and privacy before submitting it.
KitNelo Blog
Image guides · Practical guides
Practical help with upload size limits, image formats, conversion and photo metadata. Choose an image workflow that fits your task. Step-by-step help with office work, creative tasks and digital life. Choose a method, understand its limits and check the result.
Practical guides
Stitch screenshots into a long PNG without repeated lines
Prepare screenshot order, overlapping text and widths before vertical stitching. Check every seam in the exported PNG and understand local processing, centered images and long-canvas limits.
White edges after background removal? Check a transparent PNG before delivery
Check a background-removal sample on light, dark and destination backgrounds. Preserve the subject, export a real transparent PNG, and recognize when complex edges need detailed editing.
How to Add Photo Watermarks Without Covering the Subject
Add text or logo watermarks in the browser, then check placement, opacity and readability at the intended display size. Keep originals and inspect batch exports before sharing.
Image upload rejected despite a small file? Check pixels and aspect ratio
Separate file size, pixel dimensions and composition. Choose cropping or resizing, check the downloaded output and avoid stretching or a later compression step changing exact dimensions.
How to compress an image to 200 KB without guessing
Reduce a photo to a 200 KB upload limit. Choose JPEG, PNG or WebP, set a size target, control resizing and check the downloaded file for size, dimensions and readable detail.
PNG vs JPG vs WebP: choosing a format for your image
Choose a format for photos, text screenshots and transparent graphics. Compare PNG, JPG and WebP, understand conversion pitfalls and preview the actual exported file.
How to convert HEIC to JPG locally in your browser
Convert phone HEIC/HEIF photos to JPG in KitNelo. Learn how to check a sample, export a batch and handle larger files, metadata changes and unsupported dynamic content.
How to remove EXIF and GPS metadata before sharing photos
Re-encode JPG, PNG and WebP photos locally to remove common metadata. Check the exported file for EXIF and GPS, and review visible clues that metadata cleaning cannot erase.
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