iTextPDF
PDF Joiner
DocuPUB
PDFChef Merge PDF
PDFill
CleverPDF
7-PDF Split & Merge
Ultra PDF Merger
RepDB
RepDB is a one-time-purchase exercise dataset for developers building fitness and workout apps โ not a subscription, not a rate-limited API. You download the data once and own it: JSON (and SQLite on the higher tier), WebP images, and full EN/DE/ES translations, with no per-request billing and no dependency on our servers staying up.
A free tier includes 400 exercises with flat-style 512ร512 images, attribution-licensed for commercial in-app use. The Starter tier ($199) adds the full catalog in classic white-background style. Standard ($399) adds transparent 1024px images, looping animations, exercise relations (similar/progressions/regressions), workout templates, and embeddings โ exclusive to that tier.
Every exercise includes muscle-group highlighting, equipment/muscle icons, MET values, and safety/goal tags. Compared to GIF- or JPG-based competitor APIs, RepDB images are transparent WebP with no watermarks, so they drop into any app UI without a white box around them.
iTextPDF RepDBRepDB's answer:
RepDB is sold as a one-time download, not a metered API โ you own the JSON/SQLite data and WebP images outright, with no rate limits, no per-request billing, and no risk of the vendor cutting off access. It's also the only dataset in this space with EN/DE/ES translations, transparent (alpha-channel) images with no watermark, muscle-group highlighting, safety/goal tags, and looping animations on the higher tier.
RepDB's answer:
RepDB grew out of a consumer workout app its creator was building solo. Sourcing exercise images and data meant either paying for a subscription API with usage caps and no caching rights, or producing everything from scratch. The illustrated, multi-language dataset was built for us first, then split out as its own product once it became clear other indie developers had the same problem and preferred to buy the data outright rather than rent it through an API.
RepDB's answer:
Most alternatives are subscription APIs โ you pay monthly, you're capped on requests, and ExerciseDB's terms of use explicitly forbid caching or storing the data at all, so every image render is a live paid API call. RepDB is the opposite: pay once, download the files, self-host with zero ongoing dependency. It's also the only option offering true DE/ES localization and transparent images instead of a white box behind every exercise.
RepDB's answer:
Solo developers and small teams building fitness or workout-tracking apps (iOS, Android, web) who need licensed exercise images and structured exercise data, but don't want to build their own media pipeline or depend on a rate-limited third-party API.
Based on our record, iTextPDF seems to be more popular. It has been mentiond 9 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
iText is the most powerful open-source PDF library in the .NET ecosystem โ and also the most misunderstood. - Source: dev.to / 4 months ago
Is this an xy problem? If you have the original document (in Markdown), one possibility would be to use my software, KeenWrite[1], to convert Markdown to XHTML then typeset XHTML to PDF via ConTeXt. See the user manual[2] for an example of a Markdown document typeset in this fashion, along with instructions. If you only have HTML to work with, you can also use Flying Saucer[3], which is what KeenWrite uses to... - Source: Hacker News / 11 months ago
IronPDF and iText are two PDF libraries used in applications for creating and editing PDF documents. Although iText is open source and commercially licensed transparently, care should be taken in respecting the terms of the AGPL. Instead, IronPDF provides developer-friendly capabilities such as native .NET support, JavaScript rendering, and HTML to PDF conversion, with minimum setup hassle, along with simple... - Source: dev.to / about 1 year ago
PDF Manipulation: Render and edit PDF documents using a mature library like iText, running in Wasm. - Source: dev.to / over 1 year ago
Some open-source PDF tools, like iText and Ghostscript, have restrictive licenses, making them impractical for commercial use. - Source: dev.to / over 1 year ago
PDF Joiner - This online tool allows you to join several PDF documents into a single file, free of charge.
DocuPUB - DocuPUB is an online file converter, file merger, file compressor, and file resizing tool.
PDFChef Merge PDF - PDFChef Merge PDF is an online tool that allows you to merge multiple PDf files into one quickly and securely.
PDFill - Open, View, Edit, Save and Print PDF Documents without Adobe Acrobat
CleverPDF - 27 Powerful and Free Online PDF Tools
7-PDF Split & Merge - Functions: Split pdf-files, Merge pdf-files together