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ProgrammingDEV Community ·

Firefox Media Guide Covers Codecs, Hardware Decoding, and Autoplay Settings

Mozilla's Firefox has improved its media handling, and a new guide explains how it works. It outlines supported video codecs such as H.264, VP8/VP9, AV1, and HEVC, along with how each is decoded. The guide walks users through enabling VA-API hardware decoding on Linux and checking its status, and it notes how Windows and macOS handle hardware acceleration by default. It also explains Firefox's autoplay rules, including how to change them globally or per site, and covers audio, WebXR, media key support, and the lack of built-in Chromecast or AirPlay.

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ProgrammingHacker News ·

Japan's Continuing Decline in Sexual Activity Remains Unexplained by Researchers

A recent Science Focus article examines the ongoing trend of low sexual activity among Japanese people. The piece notes that reported rates of sex have stayed low for years despite various social and economic efforts. Researchers have proposed several contributing factors, though none has been conclusively established. The article highlights that the underlying causes remain unclear to experts studying the issue. The discussion was also picked up on Hacker News, where it drew modest attention from readers.

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ProgrammingDEV Community ·

Firefox Bookmarks: Tags, Keyword Searches, and the Library Feature Users Miss

A DEV Community guide highlights bookmark features in Firefox that many users never discover. It explains how to open the bookmarks sidebar, the full Library window, and the bookmarks toolbar for quick access. Tags are presented as a more flexible alternative to folders, since a bookmark can carry multiple tags and be found along several categories. The article also covers keyword searches, which let users type a short keyword in the address bar to run a site search, along with tab-saving and HTML import/export options.

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ProgrammingDEV Community ·

Sourcey launches open registry of startup credit programs for AI agents to cite

Sourcey is an open registry of startup credit programs and agent-readiness report cards, designed primarily for machine consumption. It offers an anonymous HTTP API, a hosted MCP server, static JSON datasets, a change feed, and llms.txt and SKILL.md files for models. Each entry is cited to the company's own source page, and answers are pinned to immutable releases with sha256 checksums and revision digests. The registry is read-only, does not apply for credits on users' behalf, and advises confirming vendor terms before relying on any offer. The article's author disclosed that they were paid to write it after finding the registry through bounty work.

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ProgrammingDEV Community ·

How to Configure Firefox's Built-In Spell Checker and Custom Dictionaries

Firefox includes a built-in spell checker that underlines misspelled words in text fields, comment boxes, and editable web areas, offering corrections and options to add words to a personal dictionary. Users can toggle spell checking per field through the right-click menu or globally via Settings or the about:config setting layout.spellcheckDefault. Additional language dictionaries can be installed from addons.mozilla.org or the Manage dictionaries option, and custom Hunspell .dic and .aff files can be placed in the profile's dictionaries folder. The personal dictionary, usually stored as persdict.dat, can be edited directly to add domain-specific terms, and spell checking can be disabled for coding contexts. The built-in checker covers spelling only, does not check grammar, and skips password fields, the address bar, and inputs that sites opt out of.

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ProgrammingDEV Community ·

Developer shares personal portfolio built with React, GSAP and Three.js, seeks feedback

A developer has built a personal portfolio website to display their projects and recent work. The site was created using React, GSAP, and Three.js, with a focus on experimenting with design and animation. The developer shared the link publicly and invited honest feedback from the community. They noted they are still learning and value suggestions for improvement.

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ProgrammingDEV Community ·

Moving 31 KNX Switches from the Home Assistant UI into knx.yaml

The author had 33 KNX switches in Home Assistant that existed only in the UI store, which sits outside their Git repository. In September they migrated 31 of these switches into knx.yaml and removed two switches they no longer wanted. Because the integration loads both sources and creates an entity for each definition, adding the YAML before deleting the UI entries would have produced duplicate switches, so the UI entities were removed first. The author also corrected nine state addresses that the actuators never answered, and used a local script that relied on Home Assistant's websocket API and a long-lived access token. Backups of the KNX store, the entity registry and knx.yaml were taken before the first deletion.

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ProgrammingDEV Community ·

Otter.ai เข้าประชุมของคุณโดยไม่ถามได้ยังไง

บทนำ: เมื่อบอทเข้าประชุมโดยที่ไม่มีใครเชิญ Otter joined your meeting. Nobody invited it. ลองนึกภาพว่าคุณกำลังประชุม Zoom อยู่ แล้วเห็นชื่อ "Otter Notetaker" โผล่ในรายชื่อผู้เข้าร่วม ทั้งที่ไม่มีใครในห้องจำได้ว่าเป็นคนเรียกมา นี่คือเสน่ห์และความน่ากังวลของ Otter.ai ในเวลาเดียวกัน เครื่องมือถอดเสียงประชุมที่ทำงานเก่งมาก แต่มีเรื่องความยินยอมที่คนใช้ควรรู้ก่อนกดเชื่อมปฏิทิน TL;DR: Otter.ai คือบริการถอดเสียงและสรุปประชุมด้วย AI ที่ได้คะแนนรีวิว 4.4/5 เริ่มใช้ฟรี และแพ็คเกจเสียเงินเริ่มต้นราว $17 ต่อเดือน เด่นเรื่องถอดเสียงสดและสรุปอัตโนมัติ เหมาะกับนักข่าว นักศึกษา และคนที่ประชุมภาษาอังกฤษบ่อย แต่

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ProgrammingDEV Community ·

How to Configure Firefox Notifications and Block Spam Alerts

Browser notifications are often abused, but Firefox asks for permission only when a site explicitly requests it. Users can review and revoke notification permissions for specific sites under Settings, Privacy & Security, Permissions. A key option is blocking all new notification requests, which stops prompts entirely. Advanced users can disable the Web Notifications API or set default permissions through about:config. Firefox uses native operating system notifications, and push notifications also require explicit permission.

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ProgrammingHacker News ·

Tesla's new Roadster debuts with claimed sub-second 0-60 mph acceleration

Tesla has unveiled its new Roadster with a debut showing that reportedly reaches 60 mph in under a second. The announcement was covered by Fox Business, which reported the performance claim. The source material provided is limited to a link and headline, so specifics such as the exact timing, test conditions, and pricing are not confirmed here. The claim has drawn attention on Hacker News, where it gathered initial discussion. Readers should treat the acceleration figure as a company-reported or media-reported claim pending independent verification.

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ProgrammingDEV Community ·

Real-Time VAT Validation in a React Checkout Form

The article explains how to validate VAT IDs as customers type into a React checkout field without exposing API credentials. Calling the vatnode API directly from the browser would leak the key in the client bundle and fail due to CORS restrictions, so the author recommends a backend proxy route that stores the key server-side. The architecture routes the React component through the developer's own endpoint, which forwards requests to vatnode and returns normalized results. Before any network call, the implementation performs a local format check, with special handling for Greek (EL) and Northern Ireland (XI) prefixes. The guide also provides a minimal Next.js route handler that reads the key from a server-only environment variable and standardizes the response shape.

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ProgrammingDEV Community ·

New AI Bias Audit Uses Paired Scenarios to Pinpoint Where Models Show Unfairness

A new benchmark evaluates AI bias through paired scenarios that change one demographic detail at a time, such as name, gender, or origin, while holding everything else constant. Responses are compared for symmetry using deterministic scoring and a fixed LLM judge, and results are broken down by axes like cultural bias, intersectionality, and factual neutrality. On the leaderboard, HY3 (free) scored 82.9 and Nemotron 3 Ultra (free) scored 81.7, with GLM 5.2 at 78.0. The authors argue that per-axis profiles are more useful than a single overall score for choosing models for specific risk areas. They also caution that the audit does not measure real-world harm and that LLM judges carry their own biases.

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ProgrammingDEV Community ·

Changed Device IP Addresses: Why Private Wi-Fi Addresses Can Break DHCP Reservations

A device that normally receives the same local address may suddenly be assigned a different one, often because of private Wi-Fi address features. A DHCP reservation ties an address to a recognized client, but a device's private Wi-Fi address is a separate identifier, so the reservation may not match. The guide advises checking the router's connected-client view, noting the time and network, and comparing the device's current Wi-Fi address with the one in the reservation. If they differ, the reservation should be updated, and the device should be reconnected to confirm the intended address is offered before any manual assignment is made.

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ProgrammingDEV Community ·

SonicWall Warns of Critical SMA1000 SSRF Flaw; Researchers Report Probes Days After Patch

SonicWall has disclosed four vulnerabilities in its SMA1000 remote access appliances, led by a pre-authentication server-side request forgery in the Work Place interface rated CVSS 10.0. The advisory, published October 6, 2026, lists affected models and fixed hotfix versions available through MySonicWall. Researchers at Defused reported that exploitation attempts reached their decoy systems on October 8, two days after disclosure, though SonicWall says it has seen no evidence of in-the-wild exploitation. A captured payload targeted a local service on port 5984, underscoring the risk to internal systems. The flaw affects the same portal that attackers exploited as a zero-day earlier in 2026, prompting urgent patching advice for appliance owners.

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ProgrammingDEV Community ·

Reminder Policies Should Include Escalation Rules for Stalled Approvals

A single reminder is often insufficient to resolve an approval that has stalled in a workflow. The article argues that an effective reminder policy should specify the waiting period, the intended recipient, the number of reminder attempts, and a clear escalation path. It recommends making the delay threshold configurable instead of hardcoding it into the flow logic. The author also suggests recording in the history when each reminder was sent and when responsibility shifted to a substitute or a higher-level approver. Without escalation, the piece contends, a process relies on someone noticing the notifications, which limits its reliability.

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ProgrammingDEV Community ·

How AI assistants decide which sources to trust when answering

AI assistants do not browse the web to answer questions but draw on a small, pre-selected set of sources they already consider credible. Unlike search engines, which present many options for users to judge, assistants produce a single answer, so they favor sources that are clear and easy to quote. Pages that vaguely describe a business tend to be excluded even when they rank well, while consistent descriptions, dated and attributable writing, and third-party coverage are more likely to be used. The author notes that backlinks and popularity matter less than clarity and accuracy, and that different assistants can name different companies because they weigh overlapping sources differently. Because answers depend on their sources, they can shift when those sources change, though the exact weighting remains unknown outside the labs.

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ProgrammingDEV Community ·

Solo developer launches free verified data API built entirely with AI-generated code

An independent developer has released a data API platform aimed at researchers and indie hackers who cannot afford enterprise data-labeling services. The platform is hosted on Vercel at zero cost and integrates cryptographic Merkle roots into its data engineering layer to verify data integrity. The developer says the entire codebase was written with AI assistance, shifting their role from line-by-line coder to system architect. The project is in its first public release, and the developer is asking the community to test endpoints, review the data structure, and suggest future schemas or features.

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ProgrammingDEV Community ·

Developer splits coding agents: expensive model supervises, cheaper one writes all the code

A developer describes an approach to building software with AI agents in which the most expensive model never writes code. Instead, a costly model acts as a strategist that checks progress every five minutes and corrects direction, while a cheaper agent on a flat subscription does the actual implementation. The author says the setup ran on existing subscriptions, with roughly $2,100 of token usage at API prices over 14 days against about $100 paid. The system is built around Orchestro, an open-source tool that manages a backlog, assigns work to executors, and merges changes only after verification passes. The author argues this division of labor is a new way to build software and invites others to share their own methods.

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ProgrammingDEV Community ·

OpenStudy AI: A Student-Built Study Assistant With Multiple Explanation Modes

A student developer has built OpenStudy AI, a web-based study assistant designed to help learners understand difficult concepts, prepare for exams, and revise topics. The tool offers several modes, including simple explanations, exam-style answers, step-by-step problem solving, and quick revision summaries. It uses a React and Vite frontend, a Node.js and Express backend, and NVIDIA's open-weight Nemotron 3 Super model accessed through OpenRouter. The project is currently a local prototype that is not publicly deployed, and its creator is seeking user feedback. Future plans include quizzes, flashcards, personalized study plans, and questions about uploaded notes.

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ProgrammingDEV Community ·

AgentaOS Lets Developers Add Payments to Apps Through Claude Code

A developer from North Macedonia built AgentaOS, a merchant of record service, to help software sellers in countries where Stripe is unavailable get paid by overseas customers. As the official seller, the platform handles card and subscription payments, applies the correct VAT or sales tax, issues invoices, manages chargebacks, and pays out to the seller's bank twice a month. The service can be configured directly from Claude Code or other MCP-compatible clients, where an agent can create products, prices, checkout links, and discount codes. Sellers do not need a company to start, with a free tier charging 4.5% plus €0.50 per card sale. The author also invited feedback from developers selling outside the US and EU about their current payment setups.

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