Why I built this site
SDK.ac brings together seven prompt builders and one leading-sentence extraction tool. The builders combine your text and selected options with fixed instructions in your browser. They do not call an AI model, so the result is a request you can review and take to a separate assistant. The summarizer returns an excerpt from the beginning of your text instead of a prompt.
The tools are free to use without an account or usage counter. Choose the tool for the request you need, fill in its fields, and inspect the generated text. A separate AI service may have its own account requirements, limits, and charges.
Your tool input is processed in page memory. Copying a generated request to another service is a separate step you choose, and that service handles the text under its own policies. The tool pages explain their local behavior and provide examples you can reproduce.
What each tool is actually for
Translation Prompt Builder inserts your source text and chosen source and target languages into a translation request. It does not translate the text or detect its language. Leading-Sentence Summarizer extracts opening chunks separated by periods, exclamation marks, or question marks. It does not identify the main argument or rank sentences by importance.
Prompt Generator combines a task, optional context, and a fixed style instruction. Put any required format or constraints in the text fields. Image Prompt Builder combines a subject with fixed style and mood phrases; it creates no images and has no separate rendering controls.
Code Explanation Prompt Builder wraps your snippet with a language label and a request suited to the selected explanation level. It does not execute or analyze code. Email Prompt Builder assembles an email drafting request from type, topic, optional recipient, and tone, followed by a fixed checklist. It does not write or send the email.
Hashtag Prompt Builder inserts your topic, platform, and requested count into a fixed request. Platform tips are stored text, not trend research. Writing Revision Prompt Builder combines existing text with one editing instruction: improvement, grammar correction, simplification, formal tone, or casual tone. The text itself remains unchanged in its output.
How these tools are built
The site uses SvelteKit and TypeScript. Pages present forms and explanatory text, while the tool functions run in the browser. Generating a request is local string assembly; it does not start a conversation with an AI service.
Each preset selects a fixed instruction. The same input and options produce the same output, which makes it possible to compare the guide examples character for character. Regenerating without changing a field will not produce a different draft.
The summarizer uses a different method: it splits text at specified punctuation and selects an opening portion. Its length settings control the number of chunks retained. Review the actual output because a shorter excerpt can omit conditions that appear later in the source.
Honest limitations you should know about
Distinguish the request you build here from an answer you obtain elsewhere. The builders preserve your inputs inside fixed wording, so an incorrect date or an ambiguous instruction remains incorrect or ambiguous. Review the assembled text before copying it.
An external assistant may return a translation, email draft, code explanation, or edited paragraph, but those results are not generated or verified by SDK.ac. Compare names, numbers, conditions, and claims with your source material before using them.
For the local summarizer, compare the excerpt directly with the full original. The displayed reduction measures whitespace-separated tokens rather than meaning preserved. For consequential documents, an opening excerpt is not a substitute for reading the complete text.
What this site is not
This is not a SaaS in disguise. There is no waitlist, no 'book a demo', no newsletter interstitial, and no plan to bolt an account system on later. It is a set of pages that do what they say.
It is also not trying to be everything. There are eight tools, chosen deliberately, plus guides explaining how to get better results from each. If the site grows, it grows a tool at a time, each one held to the same bar: would I use this myself, this week? That bar is the entire product strategy.