# Aftermath File Fixer > A free, local-first image preparation web application for JPG, PNG, and WebP. It resizes, normalizes, validates, and packages images in the visitor's browser; selected image bytes are not uploaded to a server. ## Core capabilities - Batch image selection, drag and drop, paste, ordering, and ZIP export. - Exact pixel dimensions, maximum/minimum byte limits, JPEG/PNG/WebP output, crop, fit, padding, focal point, rotation, and mirroring. - Measured pass, warning, and fail results with previews of the rendered output. - Apple App Store and Google Play asset packs with official requirement links and visible last-verified dates. - No accounts, cloud storage, server-side image processing, uploaded image analytics, subscriptions, or paywalls. ## Main routes - [Quick start](https://aftermath.cc/): pick images, select a common destination, and begin a local fitting task. - [Custom image sizing](https://aftermath.cc/custom): explicit pixels, KB limits, format, crop/fit method, focal point, and destination-specific choices. - [Local results](https://aftermath.cc/results): the active browser tab's transient processing status, output preview, validation, and downloads. This route is intentionally not indexed because it contains no standalone content outside an active local session. ## Accuracy and safe-use notes - A passing result means the output meets the selected local dimensions and byte checks. It is not a guarantee that an external destination will accept content, authenticity, metadata, localization, or policy requirements. - The tool never silently treats a resized iPhone capture as an authentic iPad, Mac, or other device capture. Users should verify the official destination requirements before submission. - Current official references are displayed on the relevant guide pages. Apple and Google can change their rules; the destination's live documentation is authoritative. ## Requirement guides - [Resize an image to an exact KB limit](https://aftermath.cc/resize-image-to-exact-kb): local quality tuning and visible byte validation. - [Compress an image to 20 KB](https://aftermath.cc/compress-image-to-20kb): strict form upload size preparation. - [Compress an image to 50 KB](https://aftermath.cc/compress-image-to-50kb): small-file validation. - [Compress an image to 100 KB](https://aftermath.cc/compress-image-to-100kb): practical application upload ceiling. - [Compress an image to 200 KB](https://aftermath.cc/compress-image-to-200kb): higher-detail capped output. - [Resize an image to exact pixels](https://aftermath.cc/resize-image-pixels): custom canvas and fitting controls. - [Resize an image to 512 by 512](https://aftermath.cc/image-to-512x512): square PNG starter workflow. - [Resize a signature image](https://aftermath.cc/signature-resizer): compact signature canvas workflow. - [Resize App Store screenshots](https://aftermath.cc/app-store-screenshot-resizer): current Apple screenshot preparation. - [iPhone App Store screenshot size](https://aftermath.cc/iphone-app-store-screenshot-size): 6.9-inch starting canvas guidance. - [Resize iPad App Store screenshots](https://aftermath.cc/ipad-app-store-screenshot-size): 13-inch iPad starting canvas guidance. - [Resize Mac App Store screenshots](https://aftermath.cc/mac-app-store-screenshot-size): 16:10 Mac screenshot workflow. - [Resize a Google Play feature graphic](https://aftermath.cc/google-play-feature-graphic): 1024 by 500 asset workflow. - [Resize a Google Play icon](https://aftermath.cc/google-play-icon-resizer): 512 by 512 PNG icon workflow. - [Resize Google Play screenshots](https://aftermath.cc/google-play-screenshot-resizer): phone screenshot starter workflow. - [Resize a YouTube thumbnail](https://aftermath.cc/youtube-thumbnail-resizer): current 3840 by 2160 recommended 16:9 thumbnail preparation. - [Resize an Instagram image](https://aftermath.cc/instagram-image-resizer): 4:5 portrait workflow. - [Resize a LinkedIn image](https://aftermath.cc/linkedin-image-resizer): square image workflow. ## Trust and policy pages - [Privacy and ad choices](https://aftermath.cc/privacy.html): local-processing boundary, optional advertising, and external-link disclosure. - [Terms of use](https://aftermath.cc/terms.html): acceptable use, external-destination responsibility, and service limitations. - [XML sitemap](https://aftermath.cc/sitemap.xml): canonical guide discovery. - [Official source catalog](https://aftermath.cc/official-sources.json): primary reference URLs and verification dates. This file is a concise navigation aid for assistants and readers. It is not required for search-engine AI features and does not replace the visible, canonical web pages.