# Build brief — a focused alternative to Instapaper Premium

> **Verdict:** Yes, for personal use · **Buildability:** 72/100 · **Category:** Reading
> **Source:** https://www.canitbevibecoded.com/instapaper-premium
> Independent editorial assessment from Can It Be Vibe Coded? Not affiliated with, endorsed by, or derived from Instapaper Premium. Verify current pricing and capabilities before acting.

## Context

**Instapaper Premium** — Save readable versions of permitted pages, highlight them, and search the archive. It currently costs $5.99/mo.

The core loop is small enough for a capable coding agent to produce a useful local version. For Instapaper Premium, save readable versions of permitted pages, highlight them, and search the archive. The hard boundary is mobile capture, sync, text-to-speech, kindle integration, and parser maintenance, plus capture polish, sync, and content partnerships.

This brief describes a focused, single-operator replacement for the part of Instapaper Premium that is genuinely reproducible. It is deliberately narrower than the product it replaces, and it says so in writing. Build the useful core; do not pretend to have rebuilt the rest.

## What you are building

Save permitted web pages or feeds, extract readable text, highlight passages, tag and search the archive, and export it in open formats.

- Build a focused single-user workflow with real persistence, search, and export.
- A responsive interface with real empty, loading, success, and error states.

## Requirements

### Functional

- Node.js 22.
- Local disk.
- Optional browser bookmarklet.
- User-supplied RSS feeds.

### Non-functional

- Accessibility: semantic markup, labelled controls, visible focus, and reduced-motion support.
- Security: server-side secrets, validated input, and no credentials in the client bundle.
- Reliability: retries with backoff on external calls, and a clear failure state when a provider is down.
- Portability: the operator can export their data and leave without losing it.

## Implementation brief

Build a personal replacement for Instapaper Premium in an empty repository.
Use Next.js 15, TypeScript, SQLite, Drizzle ORM, Readability.js, and a local background worker; do not offer alternative stacks.
The core loop is: save permitted web pages or feeds, extract readable text, highlight passages, tag and search the archive, and export it in open formats.
Make the first run work locally with one documented command.
Store all user data locally by default and make export straightforward.
Put secrets in .env, ship .env.example, and never commit credentials.
Support manual URL save, RSS or Atom subscriptions, OPML import, and a simple bookmarklet.
Fetch politely with a clear user agent, rate limits, conditional requests, and robots-aware behavior.
Extract title, author, date, canonical URL, readable HTML, and selected images.
Provide inbox, unread, archive, favorites, tags, highlights, notes, and full-text search.
Keep the original URL prominent and never attempt to bypass authentication or paywalls.
Export OPML, bookmarks HTML, Markdown, and a complete JSON backup.
Include clear empty, loading, success, and recoverable error states.
Add input validation, safe filenames, and graceful handling of unavailable APIs.
Write focused tests for the core transformation and one end-to-end happy path.
Create a README with setup, architecture, permissions, data location, and backup steps.
Do not add accounts, billing, telemetry, analytics, or a hosted control plane.
Deliberately leave out paywall circumvention.
Deliberately leave out licensed publisher content and recommendation networks.
Deliberately leave out native mobile clients and seamless commercial sync.
Finish by running the tests and listing the exact commands used.

## Delivery standard

- Inspect the repository first, then write a short implementation plan before writing code.
- Deliver the smallest complete end-to-end workflow first; every primary control must work against persisted data.
- Use real validation and storage; never substitute fake dashboards, decorative controls, hard-coded success states, or mock integrations.
- Include responsive layouts plus genuine empty, loading, success, validation, and failure states.
- Keep secrets server-side in environment variables, provide .env.example, and never commit credentials or user data.
- Add structured logs around every external call and return actionable errors without leaking sensitive details.
- Write unit tests for the core logic and one automated test of the main user journey.
- Finish with a README covering setup, architecture, data location, backups, tests, deployment, and known limitations.

## Acceptance criteria

- [ ] A clean install starts the app using only the README and .env.example.
- [ ] The primary journey works from first visit through saved result, reload, edit, export, and deletion where applicable.
- [ ] Invalid input, missing configuration, provider failure, and an empty database each have a usable state.
- [ ] The interface works at 390px and 1440px, is keyboard navigable, and shows visible focus on every control.
- [ ] Tests, type checking, linting, and a production build all pass with no ignored failures.
- [ ] No part of the interface implies a live integration, security guarantee, or scale capability that was not actually built and verified.

## Non-goals

Do not build these, and do not claim to have replaced them:

- Mobile capture, sync, text-to-speech, Kindle integration, and parser maintenance.
- Publisher bypasses.
- Cross-device mobile capture.
- High-quality recommendation graph.
- The last 20 percent is sync, migration fidelity, speed, and edge cases.
- Licensed content and distribution rights are not reproducible with an LLM.

## What you still own after launch

- Run migrations, backups, restores, and dependency updates.
- Test the critical journey after every model, API, or hosting change.
- Monitor failures and fix the edge cases a first prompt will miss.

## Risk

**Manageable.** A personal version is realistic if you test the critical journey and keep reliable backups.

Editorial confidence in this assessment: high. No independent one-shot implementation is linked yet.

## Prior art

Working open-source software you can read, fork, or borrow from before starting:

- [FreshRSS](https://github.com/FreshRSS/FreshRSS) — Mature open-source RSS reader with feeds, filters, and self-hosting support

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Generated by [Can It Be Vibe Coded?](https://www.canitbevibecoded.com) · Full report: https://www.canitbevibecoded.com/instapaper-premium