--- title: "Javascript Code Snippets" lang: "en" author: "Mohammad Abu Mattar" canonical: https://mkabumattar.com/codesnippets/javascript --- # Javascript Code Snippets Browse code snippets written in Javascript [All Snippets21](/codesnippets)[Cloud1](/codesnippets/categories/cloud)[Aws6](/codesnippets/categories/aws)[Devops9](/codesnippets/categories/devops)[Automation3](/codesnippets/categories/automation)[Shell scripting6](/codesnippets/categories/shell-scripting)[Productivity3](/codesnippets/categories/productivity)[More…](/codesnippets/categories) [All Snippets21](/codesnippets)[Bash and Python1](/codesnippets/bash-and-python)[Python, Node.js and Go1](/codesnippets/python-nodejs-and-go)[SQL and Python1](/codesnippets/sql-and-python)[Bash7](/codesnippets/bash)[Javascript1](/codesnippets/javascript)[Python7](/codesnippets/python)[Typescript3](/codesnippets/typescript) LanguageAllBash (7)Python (7)Typescript (3)Bash and Python (1)Javascript (1)Python, Node.js and Go (1)SQL and Python (1)CategoryAllDevops (9)Aws (6)Shell scripting (6)Backend (5)Python (5)Automation (3)Nodejs (3)Productivity (3)Database (2)Performance (2)Ai ml (1)Async (1)Bash (1)Clean code (1)Cloud (1)Computer vision (1)Data modeling (1)Document processing (1)Linux (1)Networking (1)Security (1)Typescript (1)TagAllPython (8)DevOps (7)Bash (6)AWS (5)NodeJS (5)Shell Scripting (5)Automation (4)Performance (4)Configuration (3)S3 (3)TypeScript (3)Backend (2)Boto3 (2)CI/CD (2)Cloud (2)Concurrency (2)DevTools (2)Environment Variables (2)IAM (2)Linux (2)Microservices (2)POSIX (2)Productivity (2)Terminal (2)Validation (2)AI Models (1)Aiohttp (1)Asyncio (1)AWS SDK v3 (1)BestPractices (1)BigData (1)Caching (1)CloudSecurity (1)Computer Vision (1)Context managers (1)Cron (1)CRUD (1)Database (1)Dataclass (1)DataScience (1)Document Processing (1)DocumentClient (1)Dotenv (1)DynamoDB (1)EC2 (1)Echo (1)Exitstack (1)Exponential Backoff (1)File upload (1)Flock (1)Frozen (1)Go (1)HTTP (1)Indexes (1)Infrastructure (1)Locking (1)Machine Learning (1)MemoryOptimization (1)MLOps (1)MultiEnvironment (1)Multipart (1)OCR (1)Open Source (1)Optimization (1)Pid file (1)PostgreSQL (1)Presigned url (1)Printf (1)Pydantic (1)QueryOptimization (1)Redis (1)Resources (1)Retry (1)Scripting (1)Scripting Best Practices (1)SecretsManagement (1)SecretsManager (1)Security (1)Shell (1)Slots (1)SQL (1)Text Recognition (1)Vault (1)With statement (1)Zod (1)Zsh (1)SortNewest firstOldest firstA to ZShortest read first [![Upload Files to AWS S3 with Pre-Signed URLs in Node.js](/_astro/hero.DybygcPa_e5EkU.webp)](/codesnippets/post/nodejs-s3-presigned-url-upload) ## [Upload Files to AWS S3 with Pre-Signed URLs in Node.js](/codesnippets/post/nodejs-s3-presigned-url-upload) - [Nodejs](/codesnippets/categories/nodejs) - [Aws](/codesnippets/categories/aws) - 13 Sept 2026 - 05 Mins read Routing file uploads through your API server is the default that nobody questions, and it is usually the wrong one. The bytes travel to your compute, sit in memory or a temp file, then travel again to [#Nodejs](/codesnippets/tags/nodejs)[#Aws](/codesnippets/tags/aws)[#S3](/codesnippets/tags/s3)+3 tags [Javascript](/codesnippets/javascript) [View Code](/codesnippets/post/nodejs-s3-presigned-url-upload) ### [Categories](/codesnippets/categories) - [Cloud1](/codesnippets/categories/cloud) - [Aws6](/codesnippets/categories/aws) - [Devops9](/codesnippets/categories/devops) - [Automation3](/codesnippets/categories/automation) - [Shell scripting6](/codesnippets/categories/shell-scripting) - [Productivity3](/codesnippets/categories/productivity) - [Bash1](/codesnippets/categories/bash) - [Security1](/codesnippets/categories/security) - [Nodejs3](/codesnippets/categories/nodejs) - [Database2](/codesnippets/categories/database) - [Typescript1](/codesnippets/categories/typescript) - [Backend5](/codesnippets/categories/backend) - [Performance2](/codesnippets/categories/performance) - [Linux1](/codesnippets/categories/linux) - [Python5](/codesnippets/categories/python) - [Async1](/codesnippets/categories/async) - [Networking1](/codesnippets/categories/networking) - [Clean code1](/codesnippets/categories/clean-code) - [Data modeling1](/codesnippets/categories/data-modeling) - [Ai ml1](/codesnippets/categories/ai-ml) - [Computer vision1](/codesnippets/categories/computer-vision) - [Document processing1](/codesnippets/categories/document-processing) ### [Tags](/codesnippets/tags) [#Aws5](/codesnippets/tags/aws)[#Ec21](/codesnippets/tags/ec2)[#Boto32](/codesnippets/tags/boto3)[#Python8](/codesnippets/tags/python)[#Devops7](/codesnippets/tags/devops)[#Automation4](/codesnippets/tags/automation)[#Iam2](/codesnippets/tags/iam)[#Cloud2](/codesnippets/tags/cloud)[#Infrastructure1](/codesnippets/tags/infrastructure)[#Bash6](/codesnippets/tags/bash)[#Shell scripting5](/codesnippets/tags/shell-scripting)[#Productivity2](/codesnippets/tags/productivity)[#Devtools2](/codesnippets/tags/devtools)[#Terminal2](/codesnippets/tags/terminal)[#Configuration3](/codesnippets/tags/configuration)[#Retry1](/codesnippets/tags/retry)[#Exponential backoff1](/codesnippets/tags/exponential-backoff)[#Cicd2](/codesnippets/tags/cicd)[#Shell1](/codesnippets/tags/shell)[#S33](/codesnippets/tags/s3)[#Pid file1](/codesnippets/tags/pid-file)[#Locking1](/codesnippets/tags/locking)[#Flock1](/codesnippets/tags/flock)[#Cron1](/codesnippets/tags/cron)[#Concurrency2](/codesnippets/tags/concurrency)[#Linux2](/codesnippets/tags/linux)[#Environment variables2](/codesnippets/tags/environment-variables)[#Posix2](/codesnippets/tags/posix)[#Vault1](/codesnippets/tags/vault)[#Secretsmanagement1](/codesnippets/tags/secretsmanagement)[#Multienvironment1](/codesnippets/tags/multienvironment)[#Security1](/codesnippets/tags/security)[#Nodejs5](/codesnippets/tags/nodejs)[#Typescript3](/codesnippets/tags/typescript)[#Secretsmanager1](/codesnippets/tags/secretsmanager)[#Cloudsecurity1](/codesnippets/tags/cloudsecurity)[#Dynamodb1](/codesnippets/tags/dynamodb)[#Aws sdk v31](/codesnippets/tags/aws-sdk-v3)[#Crud1](/codesnippets/tags/crud)[#Documentclient1](/codesnippets/tags/documentclient)[#Zod1](/codesnippets/tags/zod)[#Validation2](/codesnippets/tags/validation)[#Dotenv1](/codesnippets/tags/dotenv)[#Backend2](/codesnippets/tags/backend)[#Presigned url1](/codesnippets/tags/presigned-url)[#File upload1](/codesnippets/tags/file-upload)[#Multipart1](/codesnippets/tags/multipart)[#Postgresql1](/codesnippets/tags/postgresql)[#Queryoptimization1](/codesnippets/tags/queryoptimization)[#Indexes1](/codesnippets/tags/indexes)[#Performance4](/codesnippets/tags/performance)[#Sql1](/codesnippets/tags/sql)[#Database1](/codesnippets/tags/database)[#Microservices2](/codesnippets/tags/microservices)[#Printf1](/codesnippets/tags/printf)[#Echo1](/codesnippets/tags/echo)[#Scripting best practices1](/codesnippets/tags/scripting-best-practices)[#Aiohttp1](/codesnippets/tags/aiohttp)[#Asyncio1](/codesnippets/tags/asyncio)[#Http1](/codesnippets/tags/http)[#Context managers1](/codesnippets/tags/context-managers)[#With statement1](/codesnippets/tags/with-statement)[#Exitstack1](/codesnippets/tags/exitstack)[#Resources1](/codesnippets/tags/resources)[#Dataclass1](/codesnippets/tags/dataclass)[#Slots1](/codesnippets/tags/slots)[#Frozen1](/codesnippets/tags/frozen)[#Pydantic1](/codesnippets/tags/pydantic)[#Scripting1](/codesnippets/tags/scripting)[#Memoryoptimization1](/codesnippets/tags/memoryoptimization)[#Datascience1](/codesnippets/tags/datascience)[#Mlops1](/codesnippets/tags/mlops)[#Bigdata1](/codesnippets/tags/bigdata)[#Bestpractices1](/codesnippets/tags/bestpractices)[#Redis1](/codesnippets/tags/redis)[#Caching1](/codesnippets/tags/caching)[#Go1](/codesnippets/tags/go)[#Optimization1](/codesnippets/tags/optimization)[#Ocr1](/codesnippets/tags/ocr)[#Computer vision1](/codesnippets/tags/computer-vision)[#Document processing1](/codesnippets/tags/document-processing)[#Open source1](/codesnippets/tags/open-source)[#Ai models1](/codesnippets/tags/ai-models)[#Machine learning1](/codesnippets/tags/machine-learning)[#Text recognition1](/codesnippets/tags/text-recognition)[#Zsh1](/codesnippets/tags/zsh)