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ProgrammingDEV Community ·

OnyxPDF Offers 50 PDF and Image Tools That Run Entirely in the Browser

A developer has built OnyxPDF, a collection of 50 tools, 32 for PDFs and 18 for images, that process files locally without uploading them to any server. The author argues that cloud uploads in typical online PDF services are unnecessary, since modern browsers using WebAssembly and Web Workers have enough capability to handle these tasks. Features include merging, splitting, compressing, OCR in seven languages, true redaction, document signing, and AES-256 encryption, with heavy processing kept off the main thread to avoid UI freezes. Image background removal is also performed on-device using a bundled segmentation model rather than a remote API. The tools are free and require no account.

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ProgrammingDEV Community ·

Temporal, BullMQ, or AWS Step Functions: Choosing a Durable Workflow Tool in 2026

Durable workflow problems such as refunds that never finish or jobs that restart after a crash are handled by three main tool families in 2026. Temporal is a language-agnostic engine that builds retries, timeouts, and crash recovery into its model, making it suited to serious services. BullMQ is a lightweight Redis-backed queue for Node that works well for basic background jobs, but leaves durability and exactly-once guarantees to the developer. AWS Step Functions offers a managed, JSON-defined state machine with no servers to run, though it brings higher costs and AWS vendor lock-in. The article's comparison favors Temporal for long-running, crash-sensitive processes and BullMQ for simple job queues, while Step Functions suits teams already committed to AWS.

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ProgrammingDEV Community ·

15 CCNA 200-301 Exam Traps That Trip Up Candidates in 2026

A guide outlines 15 common misconceptions that Cisco's CCNA 200-301 exam uses to catch unprepared candidates across all six domains. It covers Layer 2 topics such as spanning tree root bridge election, where the lowest Bridge ID wins rather than the highest priority. It also explains the difference between CDP and LLDP, port roles versus port states, and why EtherChannel fails when member interface settings do not match. Routing traps include OSPF's default reference bandwidth making Gigabit and Fast Ethernet links appear equal, and DR/BDR election favoring the highest priority. The guide stresses that understanding why wrong answers are wrong matters as much as knowing the correct ones.

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ProgrammingDEV Community ·

GitHub Actions max-parallel setting queues all matrix jobs upfront, triggering wasteful runner launches

A GitHub Community discussion (#209687) reported that GitHub Actions creates and queues every matrix job at run start when strategy.max-parallel is set, even though the limit means only some can execute at once. Each queued event prompts autoscalers such as terraform-aws-github-runner or Actions Runner Controller to launch a runner, so many runners sit idle until scale-down terminates them. The payload does not distinguish jobs waiting for capacity from jobs blocked by max-parallel, so autoscalers cannot tell the difference. The discussion also found that matrix jobs calling reusable workflows are created and queued one at a time, which avoids the problem. This suggests sequential queuing is possible, though it is unclear whether the difference is intentional.

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ProgrammingDEV Community ·

GitHub Adds Option to Count Draft Pull Requests Toward Repository PR Limits

GitHub has introduced an optional setting letting maintainers count draft pull requests toward their repository's pull request limits. The change responds to a loophole where contributors opened many drafts to get around limits introduced in June 2026. Drafts were found to trigger notifications, consume CI/CD resources, and add to review backlogs even though they were not ready for review. The setting is found under Repository settings, then Moderation, then Interaction Limits, and is off by default so projects that rely on drafts can keep their current workflow. Early adopters also noted that GitHub's official documentation lagged behind the feature, still stating that drafts do not count toward limits.

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ProgrammingDEV Community ·

Anthropic's Claude 5.5 lineup and Fable 5.1: which model to pick and what it costs

Anthropic now offers four current Claude models: Fable 5.1, Opus 5.5, Sonnet 5.5 and Haiku 5.5, all sharing a 1M-token context window and up to 128K output tokens. Per-token prices differ enormously, with the most expensive model costing about 100 times more on input than the cheapest. Fable 5.1 targets the hardest reasoning and long autonomous agent tasks, while the author suggests Opus 5.5 as the default for most workloads. Sonnet 5.5 is positioned as a faster, cheaper option for high-volume work needing real intelligence, and Haiku 5.5 for classification, extraction and routing. The guide notes pricing can change and advises checking Anthropic's pricing page before budgeting large jobs.

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ProgrammingDEV Community ·

Why Graceful Shutdowns Still Drop In-Flight Requests and Cause Deploy 502s

A service saw about a dozen 502 errors per deploy, clustered in a two-second window and affecting only requests lasting longer than five seconds. Its shutdown handler stopped accepting connections, slept for five seconds, and then called sys.exit, which does not wait for in-flight work and so killed long-running requests, including open database transactions. The author recommends failing readiness before stopping traffic so the load balancer can react, draining in-flight requests by tracking a counter rather than relying on a fixed sleep, and closing the database pool last so transactions are not interrupted. The app's own shutdown deadline must also fall well inside the orchestrator's grace period, since the orchestrator force-kills at its end. After these changes, the 502s reportedly dropped to zero.

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ProgrammingHacker News ·

Hacker leaks 281 GB of data allegedly from Germany's far-right AfD party

A hacker has publicly released roughly 281 gigabytes of data reportedly taken from Germany's far-right Alternative for Germany (AfD) party. The article linked from Hacker News, published by security firm Bitdefender, covers the leak as reported by its HotForSecurity blog. The source text available here is limited to the link and discussion metadata, so details on the exact contents, timing, and method of the breach could not be confirmed. Readers should treat the specifics of the leak as unverified until further reporting is consulted.

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ProgrammingHacker News ·

OpenSSL 4.1.0 Released on GitHub

The OpenSSL project has published version 4.1.0, made available as a tagged release on its GitHub repository. The announcement was shared on Hacker News, where it gathered 31 points and 6 comments. The source material provides only the release link and discussion metadata, without a detailed changelog. Readers seeking specifics on new features or security fixes should consult the official release page.

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ProgrammingHacker News ·

AI Builds Citation-Backed Wiki From 45,000 Enron Emails

A team has used AI to generate a wiki drawn from roughly 45,000 emails associated with Enron. Each fact in the wiki is linked to a source citation, allowing readers to trace claims back to the original messages. The project is presented as a Show HN post on Hacker News, where it gained modest attention with 9 points and 2 comments. The source material provided includes only the project link and discussion metadata, so the specific findings and methodology are not described in detail.

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ProgrammingDEV Community ·

Frameworks or Libraries? How Solo Developers Can Choose the Right JavaScript Tool

Solo tech founders often struggle with scalability and resource limits, making the choice between JavaScript frameworks and libraries a critical early decision. Frameworks such as React, Angular, and Vue.js provide built-in structure and speed up launches, but they carry a steeper learning curve and risk lock-in. Libraries offer greater architectural freedom and lighter footprints, though they require more upfront planning and integration effort. The article illustrates trade-offs through examples like real-time financial dashboards and social analytics tools, noting where Angular's data binding or React's component model may fit. It concludes that the right choice depends on how well the tool's philosophy aligns with the project's operational strategy.

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ProgrammingDEV Community ·

Developer builds tool that logs bug fixes and flags repeated mistakes before commit

The author notes that the same credential-leak bug in the Python requests library was fixed in 2014 and again in 2023, because the lesson was buried in git history. Similar redirect-credential bugs have been fixed at least 47 times across 22 projects since 2014. To counter this, the author built Bug Diary, a local tool that automatically writes post-mortems for fix commits using Gemma 4 and checks new changes against past lessons. It runs entirely on a laptop with Ollama and a SQLite file, and a demo shows it catching a repeated race condition in a separate project's token refresh code.

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ProgrammingDEV Community ·

Orquesta Commits Every AI Agent Action to Git for Full Traceability

The developers of Orquesta argue that AI agents modifying a codebase should be held to the same traceability standards as human developers. Their platform records each discrete agent action, such as a file edit, shell command, or test fix, as a separate git commit with its own diff, timestamp, and message. The agent works on dedicated branches under its own git identity, so changes can be distinguished from human work. The authors contrast this with tools that either leave AI edits uncommitted or bundle a whole session into one opaque commit, which makes review and selective rollback difficult. Granular commits, they say, let teams see exactly what changed, when, and why, and revert only the problematic step.

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ProgrammingDEV Community ·

Agent Ran Approved Command 40 Minutes After Sign-Off, Prompting Time-Limited Lease Tool

A developer who uses coding agents on a propose-approve-execute workflow found that a command they approved at 10:00 was run at 10:40, after the approval had gone stale. In response, they built leaseguard, a single-file, zero-dependency Node 18+ tool that turns an approval into a time-limited grant tied to a specific command and note. Before execution, the gate checks the lease and a standing deny policy, which takes precedence over any valid lease. The tool also keeps an audit log of what ran and what was denied. The author notes it is not designed to stop a determined adversary with access to the local file system.

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ProgrammingDEV Community ·

Checking before helping: why offers and refusals matter in assistance

An article in a DEV Community series argues that immediately intervening when someone seems to struggle is not always best. It suggests that social capability includes checking what the person wants, accepting a refusal, and waiting. The author illustrates this with a fictional library scene in which a helper offers to pick up a fallen paper, withdraws when declined, and leaves the owner to retrieve it. The piece cites developmental research on children's helping behavior while cautioning that it does not establish consent-checking or appropriate assistance in every situation. It also proposes design principles for robots, such as separating a detected need for help from permission to act and canceling queued commands after a refusal.

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ProgrammingDEV Community ·

Lighthouse en un sitio de 1.382 páginas: qué medir y qué ignorar

A team measured its 1,382-page static site, built with Astro and hosted on Cloudflare, using Lighthouse 13 against production to check whether new pages lowered scores. Five page templates scored between 98 and 100 in performance, with 100 in accessibility, best practices and SEO, and near-zero layout shift and blocking time. They found that one-to-two-point differences between runs of identical code reflect measurement noise rather than regressions, so repeating the test comes first. Their optimizations included hashing and minifying scripts, which cut one bundle from 106.2 KB to 36.1 KB, and avoiding third-party analytics. The authors also stressed testing one page per template and confirming suspected issues against production, since local environments can produce misleading results.

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ProgrammingDEV Community ·

Claude Dashboards Can Build Live ClickHouse Views Through a Semantic Layer

A DEV Community tutorial shows how to create a live dashboard on a large ClickHouse dataset using Claude Dashboards, a feature requiring a paid Claude plan. The example uses the public eMondrian demo, which contains 182 million US flight records and a semantic layer defining measures such as On-Time Rate. Instead of letting Claude write SQL directly against the database, the connection routes through the semantic layer so Claude queries predefined cubes and measures via MDX. The author, who created the open-source eMondrian tool, says the setup takes about ten minutes and requires no installation, with the main effort going into reviewing Claude's actions. The walkthrough covers adding the demo as a custom connector, prompting Claude to build the dashboard, and approving the tool calls it makes along the way.

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ProgrammingDEV Community ·

How to prompt an image-to-video model to recreate the four-beat "dime dime baby" party meme

A guide explains how to recreate the viral "dime dime baby" party meme, which spread on TikTok in October 2026, using a general image-to-video model. The meme shows a guest dancing toward the camera, taking a large bite of pan dulce, staring into the lens while chewing, then dancing out of frame. The author argues that meme prompts must describe an ordered sequence of actions rather than a general scene, since missing a beat breaks the joke. Recommended practice includes listing the four beats separately, specifying a handheld vertical 9:16 camera, and anchoring the face to a reference photo. The author also advises requesting instrumental audio and avoiding real names, lyrics, or copyrighted footage.

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ProgrammingDEV Community ·

Practical Checklist for Optimizing Blog Images in HTML for Performance

The article argues that blog images can clarify complex ideas quickly but can also become the heaviest resource on a page, so optimization requires deliberate choices. It advises first asking what each image contributes, with screenshots needing to show only relevant interface and diagrams explaining relationships better than text. For screenshots, it recommends cropping to the relevant window, removing sensitive data, and keeping labels legible at display size, while warning that found images need verified reuse permission. It recommends matching file formats to content, such as PNG for exact-detail graphics, SVG for vector art, and WebP or AVIF for photographs, and generating multiple resized variants instead of a single size. Finally, it explains using srcset and sizes attributes so browsers can select appropriate files, while treating above-the-fold hero images differently to avoid lazy loading them.

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