Free Browser Tool Uses WebAssembly and Web Workers to Generate Large Excel Files

·1 views

A developer has released a free, browser-based tool that generates Excel files with a user-specified number of rows, requiring no installation or account signup. The tool is built using Go and the Excelize library compiled to WebAssembly, enabling near-native execution speeds for handling hundreds of thousands or even millions of rows. To prevent the browser from freezing during heavy processing, the WebAssembly module runs inside a Web Worker, keeping the user interface responsive throughout file generation. All processing happens locally in the browser, meaning no files are uploaded to any server. The tool is aimed at developers and testers who need large sample datasets for import testing, benchmarking, or application stress testing.

Read the full story at DEV Community

This is an AI-generated summary. ShortSingh links to the original source for the complete article.

Discussion (0)

Why Using Generative AI for Design Can Cost More Time Than It Saves

A developer and writer on DEV Community argues that generative AI image tools function like a 'gacha game,' where each prompt is a random pull with no guaranteed outcome. Unlike gacha games, AI has no pity system — the odds of getting a desired result do not improve with repeated attempts. While individual generations cost only cents, the human time spent reviewing, judging, and re-prompting outputs can add up to hours of quality control work. The author also points out that even a successful AI-generated image is typically a raster file, requiring additional manual work to convert into a production-ready vector asset. The piece concludes that for highly specific or complex design needs, the true cost of generative AI often exceeds that of hiring a skilled designer.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Insufficient source material — cannot generate reliable summary

The provided article contains only two sentences and lacks the necessary factual detail to produce an accurate, neutral 4-5 sentence summary. No names, dates, locations, outcomes, or specific events are described. Publishing a summary based on this content would require inventing facts, which falls outside editorial guidelines. Please provide the full article text for proper processing.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

How to Scale Shopify Integrations to Handle Millions of Records Daily

Enterprise Shopify integrations often break at high volume not due to bad code, but because teams scale a small-volume architecture instead of adopting a high-volume one. Shopify's Bulk Operations API allows developers to submit a single asynchronous query and download full results as JSONL, drastically reducing rate limit consumption compared to thousands of sequential paginated requests. For real-time API calls, teams should query only necessary fields, throttle dynamically using the throttleStatus data returned in each response, and shift non-urgent tasks to off-peak hours. Webhook processing at scale requires handlers to immediately queue incoming payloads and return a 200 response, letting background workers process events at a manageable pace to avoid timeouts and duplicate deliveries. Adding dead letter queues for repeatedly failing events and building idempotency into processing logic are also critical safeguards for reliable high-volume Shopify integrations.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Server Actions vs tRPC: A Practical Guide to Choosing the Right Next.js Tool

A technical comparison published on DEV Community breaks down when developers should use Next.js Server Actions versus tRPC in App Router projects. Server Actions, built directly into React 19, are recommended for simple forms tied to a single web client, offering built-in serialization, cache revalidation, and functionality without client-side JavaScript. tRPC, which has matured as a popular choice for end-to-end type safety, is better suited when teams need request batching, query caching, or a shared API layer across both web and mobile clients. Both tools solve the same core problem of moving typed data from browser to server without manually building REST endpoints. The guide emphasizes that the right choice depends on an application's actual scaling needs rather than which tool is currently trending.

0 comments Read more at DEV Community