About DK-JS
DK-JS (dk-js.com) is a free site for role-based ChatGPT Prompt Packs for work, plus lightweight browser helpers—AI text detector, resume/ATS check, presentation outlines, private chat-with-PDF—and classic converters (PSD, PDF to image, Mermaid, images). Open a page, copy a prompt or drop a file, and get a usable result without installing software or creating an account for the core workflows.
Product philosophy: Simple, Fast, Browser-native
Our product idea stays narrow. The homepage focuses on Prompt Packs you can copy for marketing, sales, teaching, real estate, and other roles—not AI art selfie prompts. Simple means each helper does one job well: detect AI-like text with honest limits, edit a resume locally, outline slides from text, ask a PDF in-browser, or use classic converters under /tools (Mermaid, PSD, PDF→image, merge/split, timers, audio). Fast means short happy paths and mobile-readable layouts. Browser-native means Canvas, local files, and client-side libraries whenever possible. We would rather ship a clear pack or converter than a vague “AI workspace,” and we do not promote humanizer/bypass products.
Local processing and privacy
Whenever the task allows it, files stay in your browser. Image merges draw with the Canvas API on your device. Mermaid to SVG and Mermaid to PNG render and export client-side for the core download path. PDF-to-image, PSD viewing, and similar flows are designed so you do not need to upload private drafts to DK-JS servers just to finish a conversion. That matters for screenshots you are not ready to publish, internal architecture diagrams, design comps, or personal audio playlists. Local processing is not a marketing slogan here; it is the default architecture for most tools. Some features intentionally load third-party media—for example a YouTube companion on Study With Me—and those follow the provider’s own terms. Advertising or analytics scripts, when present, are separate from the file-processing path. Read the Privacy Policy for how site-level data is handled, and treat anything displayed on screen on a shared computer with the same care you would give any sensitive document.
Who DK-JS is for
DK-JS is for developers who want a crisp Mermaid SVG for a README or wiki, designers and PMs who need a quick PSD glance or PNG flatten without opening a heavy desktop app, students and makers who want a browser stopwatch, timer, or Study With Me session, creators assembling playlist covers or merged before/after images, and anyone converting PDF pages to images for slides or chat. If you value privacy-friendly defaults, dislike forced sign-ups for basic exports, and prefer English (or Chinese) copy that describes what the tool already does, you are in the target audience. We are not trying to replace full editors like Photoshop, Illustrator, or enterprise diagram platforms. We are the tab you open when the job is small, urgent, and better finished in the browser.
What you can do here today
Browse Prompt Packs on the homepage and scene pages (/prompts/marketing/, /sales/, /teachers/, /real-estate/). Try /ai-detector/, /ai-resume/, /ai-presentation/, and /chat-with-pdf/. Classic tools remain at their URLs and are listed on /tools/: Mermaid SVG/PNG, merge/split images, PSD viewer and PSD to PNG, PDF to image, playlist covers, stopwatch, timer, Study With Me, and MP3 player. English at the site root; Chinese under /zh/.
Contact
Questions, feedback, or bug reports: use the Contact page or email [email protected]. Please include the tool URL, browser, and a short description of what you expected versus what happened. We read mail for product improvements and support; we do not ask you to upload private source files to email unless you choose to share a minimal reproduction.