# Audio, video & images

> A network of 19 focused, deterministic tools. Every tool has a human page, a JSON API, an OpenAPI description and an MCP tool that all return the same result (inputs, result, units, assumptions, sources, timestamps).

## Machine interfaces
- Tool catalog (JSON): https://media.usefulweb.site/api/v1/tools
- OpenAPI (all tools): https://media.usefulweb.site/openapi.json
- MCP server (all tools + workflows): https://media.usefulweb.site/mcp
- Pick a tool for a natural-language request: POST https://media.usefulweb.site/api/v1/tools/prompt-to-tool-router/calculate {"request": "..."}

## Tools
- [Audio Cutter & Merger](https://audiocuttermerger.usefulweb.site/): Trim audio, keep or remove ranges, fade in/out, or join up to 10 clips with crossfades. API: POST https://media.usefulweb.site/api/v1/tools/audio-cutter-merger/calculate
- [Audio Loudness Normalizer](https://audioloudnessnormalizer.usefulweb.site/): Measure LUFS and true peak, then normalise to Spotify, podcast or EBU R 128 targets. API: POST https://media.usefulweb.site/api/v1/tools/audio-loudness-normalizer/calculate
- [Background Remover](https://backgroundremover.usefulweb.site/): Remove plain backgrounds from product photos and logos (colour-based, no AI) → transparent PNG. API: POST https://media.usefulweb.site/api/v1/tools/background-remover/calculate
- [Batch Image Resizer & Cropper](https://batchimageresizer.usefulweb.site/): Resize or crop up to 30 images at once: exact size, fit, percentage or 1:1, 4:5, 16:9, 9:16. API: POST https://media.usefulweb.site/api/v1/tools/batch-image-resizer/calculate
- [Batch Watermark Studio](https://batchwatermarkstudio.usefulweb.site/): Add a text or logo watermark to up to 30 images at once: position, tiling, opacity and angle. API: POST https://media.usefulweb.site/api/v1/tools/batch-watermark-studio/calculate
- [EXIF Inspector & Cleaner](https://exifinspectorcleaner.usefulweb.site/): See all photo metadata (EXIF, GPS, XMP, IPTC, MakerNotes) and download a cleaned copy. API: POST https://media.usefulweb.site/api/v1/tools/exif-inspector-cleaner/calculate
- [HEIC/RAW Image Converter](https://heicrawconverter.usefulweb.site/): Convert iPhone HEIC, AVIF and camera RAW (CR2, CR3, NEF, ARW, DNG…) to JPG, PNG or WebP. API: POST https://media.usefulweb.site/api/v1/tools/heic-raw-converter/calculate
- [Image Compressor](https://imagecompressor.usefulweb.site/): Shrink JPG, PNG, WebP, AVIF or GIF images: convert, resize, strip metadata and compare sizes. API: POST https://media.usefulweb.site/api/v1/tools/image-compressor/calculate
- [Image Upscaler](https://imageupscaler.usefulweb.site/): Enlarge images 2×, 3× or 4× with classic Lanczos/Mitchell filters and sharpening (no AI). API: POST https://media.usefulweb.site/api/v1/tools/image-upscaler/calculate
- [MP3 Tag & Cover Editor](https://mp3tagcovereditor.usefulweb.site/): Edit MP3 ID3 tags (title, artist, album, year…) and add, replace or remove the cover. API: POST https://media.usefulweb.site/api/v1/tools/mp3-tag-cover-editor/calculate
- [Subtitle Studio](https://subtitlestudio.usefulweb.site/): Convert SRT, VTT, ASS and SBV; shift, re-sync, fix overlaps, wrap lines and check CPS. API: POST https://media.usefulweb.site/api/v1/tools/subtitle-studio/calculate
- [SVG Optimizer](https://svgoptimizer.usefulweb.site/): Shrink and sanitise SVG files: strip editor junk and scripts, round numbers, minify paths. API: POST https://media.usefulweb.site/api/v1/tools/svg-optimizer/calculate
- [Universal Audio Converter](https://audioconverter.usefulweb.site/): Convert MP3, WAV, FLAC, Ogg, Opus, M4A and AIFF with bitrate and sample-rate control. API: POST https://media.usefulweb.site/api/v1/tools/audio-converter/calculate
- [Universal Video Converter](https://videoconverter.usefulweb.site/): Convert video to MP4, WebM, MOV or MKV: resize, set quality and fps, or remux losslessly. API: POST https://media.usefulweb.site/api/v1/tools/video-converter/calculate
- [Vertical Video Reframer](https://verticalvideoreframer.usefulweb.site/): Reframe video to 9:16, 1:1, 4:5 or 16:9 by cropping, a blurred background or bars. API: POST https://media.usefulweb.site/api/v1/tools/vertical-video-reframer/calculate
- [Video Compressor](https://videocompressor.usefulweb.site/): Shrink a video to a target size (two-pass) for e-mail, WhatsApp or Discord, or by quality. API: POST https://media.usefulweb.site/api/v1/tools/video-compressor/calculate
- [Video Cutter & Merger](https://videocuttermerger.usefulweb.site/): Trim video, remove a section or join clips: lossless copy or frame-exact re-encode. API: POST https://media.usefulweb.site/api/v1/tools/video-cutter-merger/calculate
- [Video to GIF Creator](https://videotogifcreator.usefulweb.site/): Turn a video clip into a high-quality GIF or animated WebP with fps, width and dithering. API: POST https://media.usefulweb.site/api/v1/tools/video-to-gif-creator/calculate
- [Video to MP3 Extractor](https://videotoaudioextractor.usefulweb.site/): Extract a video’s soundtrack as MP3, WAV or FLAC, or copy the original audio losslessly. API: POST https://media.usefulweb.site/api/v1/tools/video-to-audio-extractor/calculate

## Workflows