Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
PDF to JPG is an intuitive app to convert PDF documents into best quality JPG, PNG and TIFF images on iPhones and iPads
$2.99 · In-app purchases
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for PDF to JPG - Converter: map the core Productivity workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Assumption to check: Limited file formats supported for conversion
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Occasional crashes on large files
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Ads disrupt user experience
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of batch processing
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
PDF to JPG is an intuitive app to convert PDF documents into best quality JPG, PNG and TIFF images on iPhones and iPads. PDF to JPG converts each PDF page as image and make it available for any application for reuse. * * * "PDF to JPG" and "PDF to JPG Pro" for macOS are also available on the Mac App Store. * * * Easy to access PDF files stored in folders on your device or stored remotely on cloud storages using integrated iOS Files browser. In addition, PDF documents in another app (For Example Mail, DropBox or SkyDrive etc.) that uses the share action button, use Copy to... action to open the PDF document in PDF to JPG. You can also transfer PDF documents from your desktop computer via iTunes into PDF to JPG application on your iPhone or iPad. CONVERSION OPTIONS ◆ IMAGE FORMATS : JPEG, PNG and TIFF are supported. ◆ QUALITY: The quality control only available for JPEG image format. The quality value allowed between 0 to 100 percent. You can use quality stepper control to increase and decrease quality value. Lower the quality percentage can convert low quality image but results into smaller file size due to high compression. Whereas higher quality percent can convert into excellent quality image but results into larger file size due to low compression. ◆ RESOLUTION: Enter resolution to scale PDF page proportionally for conversion into image. 72 ppi is equals 1x scale. Higher the resolution, bigger the output image. You can use resolution stepper control to increase and decrease quality value. ◆ COLOR MODEL: RGB or Gray to specify output image color space model. Conversion using Gray color model can create smaller file size images with only grayscale colors. ◆ INCLUDE ANNOTATIONS: Switch on to enable display of all types of annotations from PDF pages into respective converted images. KEY FEATURES: - Password protected PDF documents supported for conversion using correct password. - Option to share PDF files and converted images as a ZIP (*.zip) file. - Allows converted images to Copy, Save to Albums, Save to Files, Copy to… in another application, Mail, Message, Print, share PDFs to nearby iOS devices via AirDrop and many more standard share actions. - Use Copy to iTunes to save and share converted images on your desktop computer. PDF VIEWER: - Inbuilt PDF viewer with fully selectable and searchable text contents. Select and copy text to clipboard for further use. - Pinch out and Pinch in to ZoomIn and ZoomOut view. - Built in search feature to find a character, word or sentence any where in the PDF document. - Scroll through your document by thumbnail view or Go to page feature. IMAGE THUMBNAIL BROWSER: ◆ Inbuilt image thumbnail browser view to for easy to see, select and share converted images. ◆ Single tap on thumbnail to select image. ◆ Double tap on thumbnail to open full screen image view. Pinch and double tap gestures on image viewer to Zoom in - Zoom out image view. Swipe left right to navigate to previous and next converted image. ◆ Long press on thumbnail to popup easy selection menu options for range selection or select/deselect all images. Note: PDF to JPG is standalone application running natively to convert PDF documents into images securely on your iOS device. You can refer inbuilt User Manual for any assistance Or Contact Support.
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.